./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:42:30,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:42:30,309 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:42:30,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:42:30,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:42:30,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:42:30,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:42:30,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:42:30,338 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:42:30,341 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:42:30,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:42:30,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:42:30,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:42:30,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:42:30,344 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:42:30,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:42:30,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:42:30,344 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:42:30,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:42:30,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:42:30,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:42:30,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:42:30,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:42:30,345 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:42:30,346 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:42:30,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:42:30,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:42:30,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:42:30,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:42:30,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:42:30,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:42:30,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:42:30,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:42:30,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:42:30,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:42:30,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:42:30,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:42:30,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:42:30,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:42:30,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:42:30,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:42:30,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:42:30,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:42:30,587 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:42:30,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i [2024-06-27 22:42:31,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:42:31,758 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:42:31,759 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.oepc.i [2024-06-27 22:42:31,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79a63520/4e05c2fd3a0145fcb55a6bcbd8eae15d/FLAGfd110d97e [2024-06-27 22:42:31,791 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79a63520/4e05c2fd3a0145fcb55a6bcbd8eae15d [2024-06-27 22:42:31,793 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:42:31,794 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:42:31,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.oepc.yml/witness.yml [2024-06-27 22:42:31,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:42:31,877 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:42:31,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:42:31,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:42:31,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:42:31,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:42:31" (1/2) ... [2024-06-27 22:42:31,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c95ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:42:31, skipping insertion in model container [2024-06-27 22:42:31,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:42:31" (1/2) ... [2024-06-27 22:42:31,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52ff22db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:42:31, skipping insertion in model container [2024-06-27 22:42:31,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:42:31" (2/2) ... [2024-06-27 22:42:31,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c95ba8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:31, skipping insertion in model container [2024-06-27 22:42:31,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:42:31" (2/2) ... [2024-06-27 22:42:31,887 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:42:31,910 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:42:31,912 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:42:31,912 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:42:31,930 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:42:31,930 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:42:31,930 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-27 22:42:31,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:42:32,160 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/safe009_rmo.oepc.i[993,1006] [2024-06-27 22:42:32,342 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:42:32,355 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:42:32,386 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/safe009_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:42:32,519 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:42:32,550 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:42:32,552 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32 WrapperNode [2024-06-27 22:42:32,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:42:32,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:42:32,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:42:32,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:42:32,559 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 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,581 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 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,622 INFO L138 Inliner]: procedures = 175, calls = 65, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 177 [2024-06-27 22:42:32,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:42:32,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:42:32,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:42:32,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:42:32,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,684 INFO L175 MemorySlicer]: Split 27 memory accesses to 2 slices as follows [2, 25]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-27 22:42:32,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,712 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:42:32,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:42:32,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:42:32,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:42:32,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (1/1) ... [2024-06-27 22:42:32,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:42:32,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:42:32,749 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) [2024-06-27 22:42:32,772 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 [2024-06-27 22:42:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:42:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:42:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:42:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:42:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:42:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:42:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:42:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:42:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:42:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:42:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:42:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:42:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:42:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:42:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:42:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:42:32,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:42:32,784 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:42:32,941 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:42:32,942 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:42:33,473 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:42:33,473 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:42:33,763 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:42:33,763 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:42:33,763 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:42:33 BoogieIcfgContainer [2024-06-27 22:42:33,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:42:33,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:42:33,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:42:33,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:42:33,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:42:31" (1/4) ... [2024-06-27 22:42:33,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f86093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:42:33, skipping insertion in model container [2024-06-27 22:42:33,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:42:31" (2/4) ... [2024-06-27 22:42:33,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f86093 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:42:33, skipping insertion in model container [2024-06-27 22:42:33,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:42:32" (3/4) ... [2024-06-27 22:42:33,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f86093 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:42:33, skipping insertion in model container [2024-06-27 22:42:33,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:42:33" (4/4) ... [2024-06-27 22:42:33,773 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.oepc.i [2024-06-27 22:42:33,787 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:42:33,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:42:33,787 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:42:33,851 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:42:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:42:33,911 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:42:33,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:42:33,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:42:33,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:42:33,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-27 22:42:33,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:42:33,938 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;@14127710, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:42:33,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:42:33,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:42:33,943 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:42:33,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:42:33,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:33,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:42:33,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:33,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash 626647594, now seen corresponding path program 1 times [2024-06-27 22:42:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845746252] [2024-06-27 22:42:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:35,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:35,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:35,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845746252] [2024-06-27 22:42:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845746252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:35,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:42:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416100368] [2024-06-27 22:42:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:42:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:42:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:42:35,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:42:35,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:35,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:35,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:42:35,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:36,556 INFO L124 PetriNetUnfolderBase]: 2790/4333 cut-off events. [2024-06-27 22:42:36,556 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:42:36,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8463 conditions, 4333 events. 2790/4333 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24241 event pairs, 1780 based on Foata normal form. 0/4177 useless extension candidates. Maximal degree in co-relation 8451. Up to 4049 conditions per place. [2024-06-27 22:42:36,579 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-27 22:42:36,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 227 flow [2024-06-27 22:42:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:42:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:42:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 22:42:36,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-06-27 22:42:36,590 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 88 transitions. [2024-06-27 22:42:36,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 227 flow [2024-06-27 22:42:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:42:36,598 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-27 22:42:36,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-27 22:42:36,602 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-27 22:42:36,602 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-27 22:42:36,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:36,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:36,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:42:36,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 912965545, now seen corresponding path program 1 times [2024-06-27 22:42:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481871995] [2024-06-27 22:42:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:38,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481871995] [2024-06-27 22:42:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481871995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:42:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071291313] [2024-06-27 22:42:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:42:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:38,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:42:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:42:38,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 22:42:38,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:38,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:38,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 22:42:38,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:39,368 INFO L124 PetriNetUnfolderBase]: 2784/4127 cut-off events. [2024-06-27 22:42:39,369 INFO L125 PetriNetUnfolderBase]: For 705/708 co-relation queries the response was YES. [2024-06-27 22:42:39,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9274 conditions, 4127 events. 2784/4127 cut-off events. For 705/708 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21765 event pairs, 1304 based on Foata normal form. 5/4129 useless extension candidates. Maximal degree in co-relation 9262. Up to 4007 conditions per place. [2024-06-27 22:42:39,388 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 61 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-27 22:42:39,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 355 flow [2024-06-27 22:42:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:42:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:42:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 22:42:39,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-27 22:42:39,392 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 119 transitions. [2024-06-27 22:42:39,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 355 flow [2024-06-27 22:42:39,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:42:39,395 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 186 flow [2024-06-27 22:42:39,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-27 22:42:39,398 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2024-06-27 22:42:39,398 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 186 flow [2024-06-27 22:42:39,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:39,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:39,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:39,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:42:39,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:39,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1762837580, now seen corresponding path program 1 times [2024-06-27 22:42:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:39,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215505299] [2024-06-27 22:42:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:39,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:41,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:41,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215505299] [2024-06-27 22:42:41,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215505299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:41,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:41,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:42:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656986856] [2024-06-27 22:42:41,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:42:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:41,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:42:41,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:42:41,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:41,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:41,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:41,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:41,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:42,379 INFO L124 PetriNetUnfolderBase]: 3373/4966 cut-off events. [2024-06-27 22:42:42,379 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2024-06-27 22:42:42,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12460 conditions, 4966 events. 3373/4966 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26032 event pairs, 1214 based on Foata normal form. 3/4967 useless extension candidates. Maximal degree in co-relation 12445. Up to 4808 conditions per place. [2024-06-27 22:42:42,403 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 87 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-27 22:42:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 548 flow [2024-06-27 22:42:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-06-27 22:42:42,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:42:42,405 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 186 flow. Second operand 5 states and 145 transitions. [2024-06-27 22:42:42,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 548 flow [2024-06-27 22:42:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 106 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:42,411 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 305 flow [2024-06-27 22:42:42,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-06-27 22:42:42,411 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-27 22:42:42,411 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 305 flow [2024-06-27 22:42:42,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:42,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:42,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:42:42,412 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1869747629, now seen corresponding path program 1 times [2024-06-27 22:42:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186995097] [2024-06-27 22:42:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:45,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:45,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186995097] [2024-06-27 22:42:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186995097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:42:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652689249] [2024-06-27 22:42:45,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:45,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:42:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:42:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:42:45,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:42:45,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:45,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:45,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:42:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:46,326 INFO L124 PetriNetUnfolderBase]: 3364/4951 cut-off events. [2024-06-27 22:42:46,327 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2024-06-27 22:42:46,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13554 conditions, 4951 events. 3364/4951 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26040 event pairs, 847 based on Foata normal form. 6/4955 useless extension candidates. Maximal degree in co-relation 13534. Up to 4731 conditions per place. [2024-06-27 22:42:46,356 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 98 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-27 22:42:46,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 119 transitions, 669 flow [2024-06-27 22:42:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:42:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:42:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 22:42:46,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123188405797102 [2024-06-27 22:42:46,360 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 305 flow. Second operand 6 states and 169 transitions. [2024-06-27 22:42:46,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 119 transitions, 669 flow [2024-06-27 22:42:46,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 667 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:46,366 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 346 flow [2024-06-27 22:42:46,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 22:42:46,367 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2024-06-27 22:42:46,368 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 346 flow [2024-06-27 22:42:46,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:46,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:46,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:46,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:42:46,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:46,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1873870696, now seen corresponding path program 1 times [2024-06-27 22:42:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802993899] [2024-06-27 22:42:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802993899] [2024-06-27 22:42:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802993899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:42:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986372680] [2024-06-27 22:42:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:42:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:42:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:42:48,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:48,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:48,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:48,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:48,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:50,181 INFO L124 PetriNetUnfolderBase]: 3402/5242 cut-off events. [2024-06-27 22:42:50,181 INFO L125 PetriNetUnfolderBase]: For 6045/6051 co-relation queries the response was YES. [2024-06-27 22:42:50,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14654 conditions, 5242 events. 3402/5242 cut-off events. For 6045/6051 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29101 event pairs, 1300 based on Foata normal form. 8/5246 useless extension candidates. Maximal degree in co-relation 14630. Up to 4673 conditions per place. [2024-06-27 22:42:50,203 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 77 selfloop transitions, 20 changer transitions 0/103 dead transitions. [2024-06-27 22:42:50,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 103 transitions, 697 flow [2024-06-27 22:42:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:42:50,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:42:50,208 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 346 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:42:50,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 103 transitions, 697 flow [2024-06-27 22:42:50,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 103 transitions, 662 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:50,215 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 469 flow [2024-06-27 22:42:50,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-06-27 22:42:50,218 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2024-06-27 22:42:50,218 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 469 flow [2024-06-27 22:42:50,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:50,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:50,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:50,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:42:50,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:50,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:50,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1425140434, now seen corresponding path program 1 times [2024-06-27 22:42:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:50,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113430546] [2024-06-27 22:42:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:50,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113430546] [2024-06-27 22:42:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113430546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:53,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:53,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:42:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285776483] [2024-06-27 22:42:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:42:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:42:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:42:53,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:53,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:53,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:53,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:53,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:54,643 INFO L124 PetriNetUnfolderBase]: 3460/5319 cut-off events. [2024-06-27 22:42:54,643 INFO L125 PetriNetUnfolderBase]: For 8858/8867 co-relation queries the response was YES. [2024-06-27 22:42:54,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17321 conditions, 5319 events. 3460/5319 cut-off events. For 8858/8867 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29508 event pairs, 1310 based on Foata normal form. 11/5327 useless extension candidates. Maximal degree in co-relation 17292. Up to 4723 conditions per place. [2024-06-27 22:42:54,672 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 81 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-27 22:42:54,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 109 transitions, 804 flow [2024-06-27 22:42:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:42:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:42:54,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:42:54,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:42:54,674 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 469 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:42:54,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 109 transitions, 804 flow [2024-06-27 22:42:54,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 800 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:42:54,685 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 566 flow [2024-06-27 22:42:54,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2024-06-27 22:42:54,686 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2024-06-27 22:42:54,686 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 566 flow [2024-06-27 22:42:54,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:54,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:54,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:42:54,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:54,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1375903587, now seen corresponding path program 1 times [2024-06-27 22:42:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593970773] [2024-06-27 22:42:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:58,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593970773] [2024-06-27 22:42:58,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593970773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:58,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:58,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:42:58,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944093275] [2024-06-27 22:42:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:58,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:42:58,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:58,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:42:58,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:42:58,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:42:58,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:58,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:58,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:42:58,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:00,072 INFO L124 PetriNetUnfolderBase]: 3491/5135 cut-off events. [2024-06-27 22:43:00,073 INFO L125 PetriNetUnfolderBase]: For 10803/10803 co-relation queries the response was YES. [2024-06-27 22:43:00,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18034 conditions, 5135 events. 3491/5135 cut-off events. For 10803/10803 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26975 event pairs, 1008 based on Foata normal form. 2/5135 useless extension candidates. Maximal degree in co-relation 18000. Up to 4859 conditions per place. [2024-06-27 22:43:00,151 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 141 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2024-06-27 22:43:00,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 176 transitions, 1225 flow [2024-06-27 22:43:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:43:00,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-06-27 22:43:00,154 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 566 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:43:00,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 176 transitions, 1225 flow [2024-06-27 22:43:00,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 176 transitions, 1201 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:43:00,166 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 667 flow [2024-06-27 22:43:00,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=667, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-06-27 22:43:00,168 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2024-06-27 22:43:00,168 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 667 flow [2024-06-27 22:43:00,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:00,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:00,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:43:00,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:00,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1430293917, now seen corresponding path program 1 times [2024-06-27 22:43:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599019859] [2024-06-27 22:43:00,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599019859] [2024-06-27 22:43:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599019859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762969374] [2024-06-27 22:43:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:03,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:03,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:03,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:03,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 667 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:03,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:03,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:03,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:05,187 INFO L124 PetriNetUnfolderBase]: 3925/5775 cut-off events. [2024-06-27 22:43:05,187 INFO L125 PetriNetUnfolderBase]: For 15469/15481 co-relation queries the response was YES. [2024-06-27 22:43:05,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21056 conditions, 5775 events. 3925/5775 cut-off events. For 15469/15481 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30579 event pairs, 985 based on Foata normal form. 16/5786 useless extension candidates. Maximal degree in co-relation 21020. Up to 5212 conditions per place. [2024-06-27 22:43:05,217 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 113 selfloop transitions, 35 changer transitions 0/154 dead transitions. [2024-06-27 22:43:05,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1249 flow [2024-06-27 22:43:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 22:43:05,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 22:43:05,219 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 667 flow. Second operand 8 states and 186 transitions. [2024-06-27 22:43:05,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1249 flow [2024-06-27 22:43:05,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 1143 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:05,233 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 801 flow [2024-06-27 22:43:05,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2024-06-27 22:43:05,234 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2024-06-27 22:43:05,234 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 801 flow [2024-06-27 22:43:05,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:05,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:05,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:43:05,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:05,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1375783617, now seen corresponding path program 2 times [2024-06-27 22:43:05,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:05,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605820337] [2024-06-27 22:43:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:05,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:08,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605820337] [2024-06-27 22:43:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605820337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:08,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768677402] [2024-06-27 22:43:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:08,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:08,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 801 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:08,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:08,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:10,213 INFO L124 PetriNetUnfolderBase]: 3989/5874 cut-off events. [2024-06-27 22:43:10,213 INFO L125 PetriNetUnfolderBase]: For 20068/20088 co-relation queries the response was YES. [2024-06-27 22:43:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23442 conditions, 5874 events. 3989/5874 cut-off events. For 20068/20088 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 31259 event pairs, 1045 based on Foata normal form. 16/5885 useless extension candidates. Maximal degree in co-relation 23405. Up to 5534 conditions per place. [2024-06-27 22:43:10,243 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 114 selfloop transitions, 31 changer transitions 0/151 dead transitions. [2024-06-27 22:43:10,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 151 transitions, 1267 flow [2024-06-27 22:43:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 22:43:10,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:43:10,245 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 801 flow. Second operand 7 states and 161 transitions. [2024-06-27 22:43:10,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 151 transitions, 1267 flow [2024-06-27 22:43:10,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 151 transitions, 1229 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-27 22:43:10,269 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 898 flow [2024-06-27 22:43:10,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=898, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2024-06-27 22:43:10,269 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-06-27 22:43:10,270 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 898 flow [2024-06-27 22:43:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:10,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:10,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:10,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:43:10,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:10,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1229688267, now seen corresponding path program 2 times [2024-06-27 22:43:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:10,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402663176] [2024-06-27 22:43:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402663176] [2024-06-27 22:43:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402663176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:13,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:13,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329287169] [2024-06-27 22:43:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:13,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:13,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:13,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:13,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 898 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:13,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:13,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:14,842 INFO L124 PetriNetUnfolderBase]: 4275/6311 cut-off events. [2024-06-27 22:43:14,843 INFO L125 PetriNetUnfolderBase]: For 24003/24090 co-relation queries the response was YES. [2024-06-27 22:43:14,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25188 conditions, 6311 events. 4275/6311 cut-off events. For 24003/24090 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34002 event pairs, 1115 based on Foata normal form. 46/6350 useless extension candidates. Maximal degree in co-relation 25148. Up to 4800 conditions per place. [2024-06-27 22:43:14,876 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 120 selfloop transitions, 44 changer transitions 0/170 dead transitions. [2024-06-27 22:43:14,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 170 transitions, 1544 flow [2024-06-27 22:43:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:43:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:43:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:43:14,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-06-27 22:43:14,878 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 898 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:43:14,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 170 transitions, 1544 flow [2024-06-27 22:43:14,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 170 transitions, 1486 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:14,906 INFO L231 Difference]: Finished difference. Result has 93 places, 123 transitions, 1112 flow [2024-06-27 22:43:14,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1112, PETRI_PLACES=93, PETRI_TRANSITIONS=123} [2024-06-27 22:43:14,908 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2024-06-27 22:43:14,908 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 123 transitions, 1112 flow [2024-06-27 22:43:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:14,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:14,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:43:14,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:14,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2079184331, now seen corresponding path program 3 times [2024-06-27 22:43:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267503534] [2024-06-27 22:43:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:17,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:17,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:17,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267503534] [2024-06-27 22:43:17,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267503534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:17,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:17,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980713882] [2024-06-27 22:43:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:17,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:17,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:17,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:17,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 123 transitions, 1112 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:17,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:17,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:17,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:19,076 INFO L124 PetriNetUnfolderBase]: 4728/6910 cut-off events. [2024-06-27 22:43:19,076 INFO L125 PetriNetUnfolderBase]: For 33268/33369 co-relation queries the response was YES. [2024-06-27 22:43:19,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31167 conditions, 6910 events. 4728/6910 cut-off events. For 33268/33369 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37073 event pairs, 1003 based on Foata normal form. 48/6951 useless extension candidates. Maximal degree in co-relation 31123. Up to 5680 conditions per place. [2024-06-27 22:43:19,180 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 110 selfloop transitions, 68 changer transitions 0/184 dead transitions. [2024-06-27 22:43:19,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 184 transitions, 1843 flow [2024-06-27 22:43:19,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-27 22:43:19,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-27 22:43:19,181 INFO L175 Difference]: Start difference. First operand has 93 places, 123 transitions, 1112 flow. Second operand 7 states and 166 transitions. [2024-06-27 22:43:19,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 184 transitions, 1843 flow [2024-06-27 22:43:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 184 transitions, 1799 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 22:43:19,221 INFO L231 Difference]: Finished difference. Result has 100 places, 145 transitions, 1524 flow [2024-06-27 22:43:19,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1524, PETRI_PLACES=100, PETRI_TRANSITIONS=145} [2024-06-27 22:43:19,222 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2024-06-27 22:43:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 145 transitions, 1524 flow [2024-06-27 22:43:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:19,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:19,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:43:19,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:19,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2079184517, now seen corresponding path program 3 times [2024-06-27 22:43:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972183325] [2024-06-27 22:43:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972183325] [2024-06-27 22:43:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972183325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:43:21,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501784805] [2024-06-27 22:43:21,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:43:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:43:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:43:21,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:21,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 145 transitions, 1524 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:21,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:21,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:21,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:23,418 INFO L124 PetriNetUnfolderBase]: 4756/6955 cut-off events. [2024-06-27 22:43:23,419 INFO L125 PetriNetUnfolderBase]: For 38358/38474 co-relation queries the response was YES. [2024-06-27 22:43:23,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34655 conditions, 6955 events. 4756/6955 cut-off events. For 38358/38474 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 37518 event pairs, 1097 based on Foata normal form. 57/7005 useless extension candidates. Maximal degree in co-relation 34607. Up to 6529 conditions per place. [2024-06-27 22:43:23,463 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 136 selfloop transitions, 33 changer transitions 0/175 dead transitions. [2024-06-27 22:43:23,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 175 transitions, 1985 flow [2024-06-27 22:43:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:43:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:43:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 22:43:23,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 22:43:23,464 INFO L175 Difference]: Start difference. First operand has 100 places, 145 transitions, 1524 flow. Second operand 6 states and 134 transitions. [2024-06-27 22:43:23,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 175 transitions, 1985 flow [2024-06-27 22:43:23,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 175 transitions, 1919 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:43:23,526 INFO L231 Difference]: Finished difference. Result has 103 places, 148 transitions, 1579 flow [2024-06-27 22:43:23,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1579, PETRI_PLACES=103, PETRI_TRANSITIONS=148} [2024-06-27 22:43:23,527 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2024-06-27 22:43:23,527 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 148 transitions, 1579 flow [2024-06-27 22:43:23,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:23,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:23,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:23,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:43:23,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:23,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1229679339, now seen corresponding path program 1 times [2024-06-27 22:43:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187257466] [2024-06-27 22:43:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:23,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:27,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187257466] [2024-06-27 22:43:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187257466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:27,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:27,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:27,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15288358] [2024-06-27 22:43:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:27,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:27,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:27,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:27,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 148 transitions, 1579 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:27,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:27,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:27,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:29,255 INFO L124 PetriNetUnfolderBase]: 4932/7467 cut-off events. [2024-06-27 22:43:29,255 INFO L125 PetriNetUnfolderBase]: For 43047/43062 co-relation queries the response was YES. [2024-06-27 22:43:29,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36295 conditions, 7467 events. 4932/7467 cut-off events. For 43047/43062 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 42022 event pairs, 1346 based on Foata normal form. 26/7490 useless extension candidates. Maximal degree in co-relation 36245. Up to 6504 conditions per place. [2024-06-27 22:43:29,374 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 163 selfloop transitions, 25 changer transitions 0/194 dead transitions. [2024-06-27 22:43:29,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 194 transitions, 2170 flow [2024-06-27 22:43:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:43:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:43:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 22:43:29,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 22:43:29,376 INFO L175 Difference]: Start difference. First operand has 103 places, 148 transitions, 1579 flow. Second operand 7 states and 163 transitions. [2024-06-27 22:43:29,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 194 transitions, 2170 flow [2024-06-27 22:43:29,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 194 transitions, 2080 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:29,421 INFO L231 Difference]: Finished difference. Result has 105 places, 151 transitions, 1603 flow [2024-06-27 22:43:29,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1603, PETRI_PLACES=105, PETRI_TRANSITIONS=151} [2024-06-27 22:43:29,422 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2024-06-27 22:43:29,422 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 151 transitions, 1603 flow [2024-06-27 22:43:29,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:29,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:29,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:29,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:43:29,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:29,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:29,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1611693106, now seen corresponding path program 1 times [2024-06-27 22:43:29,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:29,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509860829] [2024-06-27 22:43:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:29,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:32,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509860829] [2024-06-27 22:43:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509860829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:32,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:32,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548747488] [2024-06-27 22:43:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:32,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:32,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:32,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:32,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 151 transitions, 1603 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:32,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:32,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:32,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:35,492 INFO L124 PetriNetUnfolderBase]: 5530/8156 cut-off events. [2024-06-27 22:43:35,493 INFO L125 PetriNetUnfolderBase]: For 44968/44976 co-relation queries the response was YES. [2024-06-27 22:43:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40051 conditions, 8156 events. 5530/8156 cut-off events. For 44968/44976 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 45480 event pairs, 1084 based on Foata normal form. 16/8170 useless extension candidates. Maximal degree in co-relation 40001. Up to 6138 conditions per place. [2024-06-27 22:43:35,541 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 228 selfloop transitions, 80 changer transitions 0/314 dead transitions. [2024-06-27 22:43:35,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 314 transitions, 3097 flow [2024-06-27 22:43:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:43:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:43:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 348 transitions. [2024-06-27 22:43:35,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819397993311036 [2024-06-27 22:43:35,543 INFO L175 Difference]: Start difference. First operand has 105 places, 151 transitions, 1603 flow. Second operand 13 states and 348 transitions. [2024-06-27 22:43:35,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 314 transitions, 3097 flow [2024-06-27 22:43:35,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 314 transitions, 3015 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:35,614 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1975 flow [2024-06-27 22:43:35,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1975, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2024-06-27 22:43:35,615 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 66 predicate places. [2024-06-27 22:43:35,615 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1975 flow [2024-06-27 22:43:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:35,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:35,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:43:35,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:35,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1615417756, now seen corresponding path program 2 times [2024-06-27 22:43:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3433988] [2024-06-27 22:43:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:39,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3433988] [2024-06-27 22:43:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3433988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865280756] [2024-06-27 22:43:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:39,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:39,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1975 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:39,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:39,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:39,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:42,767 INFO L124 PetriNetUnfolderBase]: 6086/8950 cut-off events. [2024-06-27 22:43:42,767 INFO L125 PetriNetUnfolderBase]: For 63155/63207 co-relation queries the response was YES. [2024-06-27 22:43:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47691 conditions, 8950 events. 6086/8950 cut-off events. For 63155/63207 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 50506 event pairs, 1129 based on Foata normal form. 33/8978 useless extension candidates. Maximal degree in co-relation 47638. Up to 7577 conditions per place. [2024-06-27 22:43:42,916 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 222 selfloop transitions, 60 changer transitions 0/288 dead transitions. [2024-06-27 22:43:42,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 288 transitions, 3294 flow [2024-06-27 22:43:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-27 22:43:42,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541501976284585 [2024-06-27 22:43:42,917 INFO L175 Difference]: Start difference. First operand has 116 places, 171 transitions, 1975 flow. Second operand 11 states and 274 transitions. [2024-06-27 22:43:42,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 288 transitions, 3294 flow [2024-06-27 22:43:43,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 288 transitions, 3123 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:43,010 INFO L231 Difference]: Finished difference. Result has 121 places, 192 transitions, 2257 flow [2024-06-27 22:43:43,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2257, PETRI_PLACES=121, PETRI_TRANSITIONS=192} [2024-06-27 22:43:43,011 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 71 predicate places. [2024-06-27 22:43:43,011 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 192 transitions, 2257 flow [2024-06-27 22:43:43,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:43,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:43,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:43,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:43:43,011 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:43,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1297189960, now seen corresponding path program 3 times [2024-06-27 22:43:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:43,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443036132] [2024-06-27 22:43:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443036132] [2024-06-27 22:43:46,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443036132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:46,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:46,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:46,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682106811] [2024-06-27 22:43:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:46,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:46,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:46,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:46,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 192 transitions, 2257 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:46,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:46,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:46,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:49,037 INFO L124 PetriNetUnfolderBase]: 6072/8922 cut-off events. [2024-06-27 22:43:49,037 INFO L125 PetriNetUnfolderBase]: For 70127/70179 co-relation queries the response was YES. [2024-06-27 22:43:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48659 conditions, 8922 events. 6072/8922 cut-off events. For 70127/70179 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 50254 event pairs, 1137 based on Foata normal form. 33/8950 useless extension candidates. Maximal degree in co-relation 48603. Up to 7571 conditions per place. [2024-06-27 22:43:49,094 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 204 selfloop transitions, 56 changer transitions 0/266 dead transitions. [2024-06-27 22:43:49,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 266 transitions, 3136 flow [2024-06-27 22:43:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:43:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-27 22:43:49,095 INFO L175 Difference]: Start difference. First operand has 121 places, 192 transitions, 2257 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:43:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 266 transitions, 3136 flow [2024-06-27 22:43:49,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 2988 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:49,226 INFO L231 Difference]: Finished difference. Result has 124 places, 192 transitions, 2232 flow [2024-06-27 22:43:49,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2232, PETRI_PLACES=124, PETRI_TRANSITIONS=192} [2024-06-27 22:43:49,227 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 74 predicate places. [2024-06-27 22:43:49,227 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 192 transitions, 2232 flow [2024-06-27 22:43:49,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:49,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:49,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:49,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:43:49,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:49,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash 534370294, now seen corresponding path program 4 times [2024-06-27 22:43:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:49,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240850947] [2024-06-27 22:43:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:52,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240850947] [2024-06-27 22:43:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240850947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:52,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:52,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:52,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489545271] [2024-06-27 22:43:52,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:52,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:52,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:52,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:52,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 192 transitions, 2232 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:52,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:52,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:52,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:55,041 INFO L124 PetriNetUnfolderBase]: 6608/9729 cut-off events. [2024-06-27 22:43:55,041 INFO L125 PetriNetUnfolderBase]: For 79435/79540 co-relation queries the response was YES. [2024-06-27 22:43:55,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52708 conditions, 9729 events. 6608/9729 cut-off events. For 79435/79540 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 55631 event pairs, 1208 based on Foata normal form. 70/9792 useless extension candidates. Maximal degree in co-relation 52650. Up to 6060 conditions per place. [2024-06-27 22:43:55,107 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 190 selfloop transitions, 109 changer transitions 0/305 dead transitions. [2024-06-27 22:43:55,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 305 transitions, 3683 flow [2024-06-27 22:43:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:55,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 22:43:55,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2024-06-27 22:43:55,109 INFO L175 Difference]: Start difference. First operand has 124 places, 192 transitions, 2232 flow. Second operand 10 states and 257 transitions. [2024-06-27 22:43:55,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 305 transitions, 3683 flow [2024-06-27 22:43:55,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 305 transitions, 3571 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:55,252 INFO L231 Difference]: Finished difference. Result has 127 places, 211 transitions, 2607 flow [2024-06-27 22:43:55,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=127, PETRI_TRANSITIONS=211} [2024-06-27 22:43:55,253 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2024-06-27 22:43:55,253 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 211 transitions, 2607 flow [2024-06-27 22:43:55,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:55,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:55,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:55,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:43:55,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:55,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -30209494, now seen corresponding path program 5 times [2024-06-27 22:43:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246820389] [2024-06-27 22:43:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246820389] [2024-06-27 22:43:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246820389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:58,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713341309] [2024-06-27 22:43:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:58,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:43:58,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 211 transitions, 2607 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:58,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:58,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:43:58,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:00,513 INFO L124 PetriNetUnfolderBase]: 6800/9981 cut-off events. [2024-06-27 22:44:00,513 INFO L125 PetriNetUnfolderBase]: For 94020/94119 co-relation queries the response was YES. [2024-06-27 22:44:00,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58033 conditions, 9981 events. 6800/9981 cut-off events. For 94020/94119 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 57065 event pairs, 1135 based on Foata normal form. 63/10037 useless extension candidates. Maximal degree in co-relation 57973. Up to 7395 conditions per place. [2024-06-27 22:44:00,581 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 185 selfloop transitions, 105 changer transitions 0/296 dead transitions. [2024-06-27 22:44:00,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 296 transitions, 3932 flow [2024-06-27 22:44:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:44:00,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 22:44:00,583 INFO L175 Difference]: Start difference. First operand has 127 places, 211 transitions, 2607 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:44:00,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 296 transitions, 3932 flow [2024-06-27 22:44:00,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 296 transitions, 3737 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:44:00,771 INFO L231 Difference]: Finished difference. Result has 131 places, 236 transitions, 3067 flow [2024-06-27 22:44:00,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3067, PETRI_PLACES=131, PETRI_TRANSITIONS=236} [2024-06-27 22:44:00,772 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-27 22:44:00,772 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 236 transitions, 3067 flow [2024-06-27 22:44:00,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:00,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:00,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:44:00,772 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:00,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -30203697, now seen corresponding path program 1 times [2024-06-27 22:44:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524799735] [2024-06-27 22:44:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524799735] [2024-06-27 22:44:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524799735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:04,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318904054] [2024-06-27 22:44:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:04,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:04,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:04,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 236 transitions, 3067 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:04,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:04,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:04,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:06,953 INFO L124 PetriNetUnfolderBase]: 6792/9996 cut-off events. [2024-06-27 22:44:06,953 INFO L125 PetriNetUnfolderBase]: For 100746/100849 co-relation queries the response was YES. [2024-06-27 22:44:06,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61372 conditions, 9996 events. 6792/9996 cut-off events. For 100746/100849 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 57499 event pairs, 1110 based on Foata normal form. 68/10057 useless extension candidates. Maximal degree in co-relation 61310. Up to 8511 conditions per place. [2024-06-27 22:44:07,040 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 197 selfloop transitions, 71 changer transitions 0/274 dead transitions. [2024-06-27 22:44:07,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 274 transitions, 3825 flow [2024-06-27 22:44:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:44:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:44:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 22:44:07,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:44:07,041 INFO L175 Difference]: Start difference. First operand has 131 places, 236 transitions, 3067 flow. Second operand 7 states and 161 transitions. [2024-06-27 22:44:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 274 transitions, 3825 flow [2024-06-27 22:44:07,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 274 transitions, 3688 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:44:07,295 INFO L231 Difference]: Finished difference. Result has 134 places, 238 transitions, 3153 flow [2024-06-27 22:44:07,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3153, PETRI_PLACES=134, PETRI_TRANSITIONS=238} [2024-06-27 22:44:07,296 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 84 predicate places. [2024-06-27 22:44:07,296 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 238 transitions, 3153 flow [2024-06-27 22:44:07,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:07,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:07,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:07,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:44:07,297 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:07,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -30203914, now seen corresponding path program 6 times [2024-06-27 22:44:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738769051] [2024-06-27 22:44:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:07,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738769051] [2024-06-27 22:44:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738769051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101276585] [2024-06-27 22:44:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:10,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 238 transitions, 3153 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:10,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:10,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:12,764 INFO L124 PetriNetUnfolderBase]: 6848/10028 cut-off events. [2024-06-27 22:44:12,764 INFO L125 PetriNetUnfolderBase]: For 103908/104030 co-relation queries the response was YES. [2024-06-27 22:44:12,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63106 conditions, 10028 events. 6848/10028 cut-off events. For 103908/104030 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 57098 event pairs, 1131 based on Foata normal form. 75/10096 useless extension candidates. Maximal degree in co-relation 63042. Up to 7437 conditions per place. [2024-06-27 22:44:12,852 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 190 selfloop transitions, 129 changer transitions 0/325 dead transitions. [2024-06-27 22:44:12,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 325 transitions, 4355 flow [2024-06-27 22:44:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 22:44:12,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-27 22:44:12,853 INFO L175 Difference]: Start difference. First operand has 134 places, 238 transitions, 3153 flow. Second operand 10 states and 250 transitions. [2024-06-27 22:44:12,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 325 transitions, 4355 flow [2024-06-27 22:44:13,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 325 transitions, 4268 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:44:13,098 INFO L231 Difference]: Finished difference. Result has 140 places, 249 transitions, 3494 flow [2024-06-27 22:44:13,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3494, PETRI_PLACES=140, PETRI_TRANSITIONS=249} [2024-06-27 22:44:13,099 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 90 predicate places. [2024-06-27 22:44:13,099 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 249 transitions, 3494 flow [2024-06-27 22:44:13,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:13,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:13,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:44:13,099 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:13,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1689588734, now seen corresponding path program 1 times [2024-06-27 22:44:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:13,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020374626] [2024-06-27 22:44:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:13,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020374626] [2024-06-27 22:44:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020374626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:44:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290538592] [2024-06-27 22:44:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:44:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:44:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:44:14,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:14,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 249 transitions, 3494 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:14,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:14,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:14,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:16,903 INFO L124 PetriNetUnfolderBase]: 6849/10257 cut-off events. [2024-06-27 22:44:16,904 INFO L125 PetriNetUnfolderBase]: For 121393/121405 co-relation queries the response was YES. [2024-06-27 22:44:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66476 conditions, 10257 events. 6849/10257 cut-off events. For 121393/121405 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 60501 event pairs, 1688 based on Foata normal form. 12/10264 useless extension candidates. Maximal degree in co-relation 66411. Up to 9348 conditions per place. [2024-06-27 22:44:16,990 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 243 selfloop transitions, 29 changer transitions 0/278 dead transitions. [2024-06-27 22:44:16,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 278 transitions, 4268 flow [2024-06-27 22:44:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:44:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:44:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 22:44:16,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:44:16,992 INFO L175 Difference]: Start difference. First operand has 140 places, 249 transitions, 3494 flow. Second operand 5 states and 120 transitions. [2024-06-27 22:44:16,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 278 transitions, 4268 flow [2024-06-27 22:44:17,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 278 transitions, 3962 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:17,238 INFO L231 Difference]: Finished difference. Result has 137 places, 256 transitions, 3370 flow [2024-06-27 22:44:17,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3196, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3370, PETRI_PLACES=137, PETRI_TRANSITIONS=256} [2024-06-27 22:44:17,239 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 87 predicate places. [2024-06-27 22:44:17,239 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 256 transitions, 3370 flow [2024-06-27 22:44:17,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:17,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:17,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:17,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:44:17,239 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 603753148, now seen corresponding path program 1 times [2024-06-27 22:44:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585629973] [2024-06-27 22:44:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:20,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585629973] [2024-06-27 22:44:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585629973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:20,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:20,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107427059] [2024-06-27 22:44:20,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:20,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:20,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:20,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 256 transitions, 3370 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:20,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:20,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:20,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:23,438 INFO L124 PetriNetUnfolderBase]: 6899/10137 cut-off events. [2024-06-27 22:44:23,438 INFO L125 PetriNetUnfolderBase]: For 116828/116838 co-relation queries the response was YES. [2024-06-27 22:44:23,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66337 conditions, 10137 events. 6899/10137 cut-off events. For 116828/116838 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 58129 event pairs, 713 based on Foata normal form. 14/10149 useless extension candidates. Maximal degree in co-relation 66270. Up to 9158 conditions per place. [2024-06-27 22:44:23,523 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 299 selfloop transitions, 58 changer transitions 0/363 dead transitions. [2024-06-27 22:44:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 363 transitions, 4747 flow [2024-06-27 22:44:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:23,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:44:23,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5695652173913044 [2024-06-27 22:44:23,525 INFO L175 Difference]: Start difference. First operand has 137 places, 256 transitions, 3370 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:44:23,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 363 transitions, 4747 flow [2024-06-27 22:44:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 363 transitions, 4706 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:44:23,773 INFO L231 Difference]: Finished difference. Result has 145 places, 260 transitions, 3545 flow [2024-06-27 22:44:23,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3545, PETRI_PLACES=145, PETRI_TRANSITIONS=260} [2024-06-27 22:44:23,773 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 95 predicate places. [2024-06-27 22:44:23,773 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 260 transitions, 3545 flow [2024-06-27 22:44:23,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:23,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:23,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:23,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:44:23,774 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:23,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1577125102, now seen corresponding path program 2 times [2024-06-27 22:44:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:23,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479119159] [2024-06-27 22:44:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479119159] [2024-06-27 22:44:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479119159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686449745] [2024-06-27 22:44:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:26,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:26,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:26,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 260 transitions, 3545 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:26,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:26,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:29,348 INFO L124 PetriNetUnfolderBase]: 6949/10211 cut-off events. [2024-06-27 22:44:29,348 INFO L125 PetriNetUnfolderBase]: For 126484/126494 co-relation queries the response was YES. [2024-06-27 22:44:29,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67649 conditions, 10211 events. 6949/10211 cut-off events. For 126484/126494 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 58528 event pairs, 982 based on Foata normal form. 14/10223 useless extension candidates. Maximal degree in co-relation 67580. Up to 9418 conditions per place. [2024-06-27 22:44:29,437 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 301 selfloop transitions, 54 changer transitions 0/361 dead transitions. [2024-06-27 22:44:29,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 361 transitions, 4767 flow [2024-06-27 22:44:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 22:44:29,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2024-06-27 22:44:29,438 INFO L175 Difference]: Start difference. First operand has 145 places, 260 transitions, 3545 flow. Second operand 10 states and 259 transitions. [2024-06-27 22:44:29,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 361 transitions, 4767 flow [2024-06-27 22:44:29,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 361 transitions, 4643 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:29,824 INFO L231 Difference]: Finished difference. Result has 149 places, 262 transitions, 3588 flow [2024-06-27 22:44:29,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3588, PETRI_PLACES=149, PETRI_TRANSITIONS=262} [2024-06-27 22:44:29,824 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2024-06-27 22:44:29,825 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 262 transitions, 3588 flow [2024-06-27 22:44:29,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:29,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:29,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:44:29,825 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:29,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1461833932, now seen corresponding path program 3 times [2024-06-27 22:44:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:29,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923742753] [2024-06-27 22:44:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:29,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923742753] [2024-06-27 22:44:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923742753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:33,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600764908] [2024-06-27 22:44:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:33,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:33,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 262 transitions, 3588 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:33,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:33,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:36,121 INFO L124 PetriNetUnfolderBase]: 7051/10385 cut-off events. [2024-06-27 22:44:36,121 INFO L125 PetriNetUnfolderBase]: For 130794/130850 co-relation queries the response was YES. [2024-06-27 22:44:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68505 conditions, 10385 events. 7051/10385 cut-off events. For 130794/130850 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60013 event pairs, 1002 based on Foata normal form. 33/10413 useless extension candidates. Maximal degree in co-relation 68434. Up to 9634 conditions per place. [2024-06-27 22:44:36,212 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 275 selfloop transitions, 39 changer transitions 0/320 dead transitions. [2024-06-27 22:44:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 320 transitions, 4508 flow [2024-06-27 22:44:36,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:36,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:44:36,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 22:44:36,215 INFO L175 Difference]: Start difference. First operand has 149 places, 262 transitions, 3588 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:44:36,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 320 transitions, 4508 flow [2024-06-27 22:44:36,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 320 transitions, 4395 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:36,505 INFO L231 Difference]: Finished difference. Result has 149 places, 266 transitions, 3626 flow [2024-06-27 22:44:36,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3626, PETRI_PLACES=149, PETRI_TRANSITIONS=266} [2024-06-27 22:44:36,506 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2024-06-27 22:44:36,506 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 266 transitions, 3626 flow [2024-06-27 22:44:36,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:36,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:36,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:36,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:44:36,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:36,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:36,507 INFO L85 PathProgramCache]: Analyzing trace with hash 722085976, now seen corresponding path program 1 times [2024-06-27 22:44:36,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:36,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962147214] [2024-06-27 22:44:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:36,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962147214] [2024-06-27 22:44:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962147214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:44:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108374102] [2024-06-27 22:44:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:44:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:44:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:44:40,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:40,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 266 transitions, 3626 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:40,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:40,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:40,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:43,383 INFO L124 PetriNetUnfolderBase]: 7329/10775 cut-off events. [2024-06-27 22:44:43,383 INFO L125 PetriNetUnfolderBase]: For 142248/142304 co-relation queries the response was YES. [2024-06-27 22:44:43,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70536 conditions, 10775 events. 7329/10775 cut-off events. For 142248/142304 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 62292 event pairs, 1024 based on Foata normal form. 45/10815 useless extension candidates. Maximal degree in co-relation 70464. Up to 9594 conditions per place. [2024-06-27 22:44:43,486 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 290 selfloop transitions, 42 changer transitions 0/338 dead transitions. [2024-06-27 22:44:43,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 338 transitions, 4749 flow [2024-06-27 22:44:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:44:43,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193236714975845 [2024-06-27 22:44:43,487 INFO L175 Difference]: Start difference. First operand has 149 places, 266 transitions, 3626 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:44:43,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 338 transitions, 4749 flow [2024-06-27 22:44:43,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 338 transitions, 4671 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:43,798 INFO L231 Difference]: Finished difference. Result has 152 places, 269 transitions, 3708 flow [2024-06-27 22:44:43,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3708, PETRI_PLACES=152, PETRI_TRANSITIONS=269} [2024-06-27 22:44:43,799 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 102 predicate places. [2024-06-27 22:44:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 269 transitions, 3708 flow [2024-06-27 22:44:43,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:43,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:43,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:44:43,800 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash -605811308, now seen corresponding path program 2 times [2024-06-27 22:44:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356395814] [2024-06-27 22:44:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356395814] [2024-06-27 22:44:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356395814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405739133] [2024-06-27 22:44:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:47,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 269 transitions, 3708 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:47,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:47,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:50,722 INFO L124 PetriNetUnfolderBase]: 7888/11707 cut-off events. [2024-06-27 22:44:50,722 INFO L125 PetriNetUnfolderBase]: For 166466/166580 co-relation queries the response was YES. [2024-06-27 22:44:50,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75932 conditions, 11707 events. 7888/11707 cut-off events. For 166466/166580 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 69385 event pairs, 1146 based on Foata normal form. 87/11787 useless extension candidates. Maximal degree in co-relation 75859. Up to 8042 conditions per place. [2024-06-27 22:44:50,827 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 266 selfloop transitions, 71 changer transitions 0/343 dead transitions. [2024-06-27 22:44:50,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 343 transitions, 5086 flow [2024-06-27 22:44:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:44:50,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2024-06-27 22:44:50,828 INFO L175 Difference]: Start difference. First operand has 152 places, 269 transitions, 3708 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:44:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 343 transitions, 5086 flow [2024-06-27 22:44:51,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 343 transitions, 4966 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:44:51,169 INFO L231 Difference]: Finished difference. Result has 154 places, 274 transitions, 3857 flow [2024-06-27 22:44:51,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3857, PETRI_PLACES=154, PETRI_TRANSITIONS=274} [2024-06-27 22:44:51,170 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 104 predicate places. [2024-06-27 22:44:51,170 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 274 transitions, 3857 flow [2024-06-27 22:44:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:51,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:51,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:44:51,170 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:51,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -614151548, now seen corresponding path program 3 times [2024-06-27 22:44:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563430888] [2024-06-27 22:44:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563430888] [2024-06-27 22:44:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563430888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207643310] [2024-06-27 22:44:55,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:55,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:55,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:55,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:55,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 274 transitions, 3857 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:55,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:55,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:55,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:58,299 INFO L124 PetriNetUnfolderBase]: 8163/12098 cut-off events. [2024-06-27 22:44:58,299 INFO L125 PetriNetUnfolderBase]: For 184211/184325 co-relation queries the response was YES. [2024-06-27 22:44:58,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80196 conditions, 12098 events. 8163/12098 cut-off events. For 184211/184325 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 71994 event pairs, 1343 based on Foata normal form. 87/12178 useless extension candidates. Maximal degree in co-relation 80121. Up to 9595 conditions per place. [2024-06-27 22:44:58,402 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 264 selfloop transitions, 69 changer transitions 0/339 dead transitions. [2024-06-27 22:44:58,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 339 transitions, 5065 flow [2024-06-27 22:44:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:44:58,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 22:44:58,404 INFO L175 Difference]: Start difference. First operand has 154 places, 274 transitions, 3857 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:44:58,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 339 transitions, 5065 flow [2024-06-27 22:44:58,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 339 transitions, 4953 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 22:44:58,794 INFO L231 Difference]: Finished difference. Result has 158 places, 276 transitions, 3939 flow [2024-06-27 22:44:58,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3751, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3939, PETRI_PLACES=158, PETRI_TRANSITIONS=276} [2024-06-27 22:44:58,794 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 108 predicate places. [2024-06-27 22:44:58,794 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 276 transitions, 3939 flow [2024-06-27 22:44:58,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:58,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:58,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:58,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:44:58,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:58,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -936498150, now seen corresponding path program 4 times [2024-06-27 22:44:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643275138] [2024-06-27 22:44:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643275138] [2024-06-27 22:45:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643275138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:01,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789373490] [2024-06-27 22:45:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:01,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:01,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 276 transitions, 3939 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:01,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:01,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:04,465 INFO L124 PetriNetUnfolderBase]: 8207/12166 cut-off events. [2024-06-27 22:45:04,466 INFO L125 PetriNetUnfolderBase]: For 179401/179515 co-relation queries the response was YES. [2024-06-27 22:45:04,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81720 conditions, 12166 events. 8207/12166 cut-off events. For 179401/179515 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 72330 event pairs, 1318 based on Foata normal form. 75/12234 useless extension candidates. Maximal degree in co-relation 81643. Up to 11182 conditions per place. [2024-06-27 22:45:04,587 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 263 selfloop transitions, 49 changer transitions 0/318 dead transitions. [2024-06-27 22:45:04,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 318 transitions, 4756 flow [2024-06-27 22:45:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:45:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:45:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 22:45:04,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:45:04,589 INFO L175 Difference]: Start difference. First operand has 158 places, 276 transitions, 3939 flow. Second operand 7 states and 161 transitions. [2024-06-27 22:45:04,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 318 transitions, 4756 flow [2024-06-27 22:45:05,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 318 transitions, 4610 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:05,061 INFO L231 Difference]: Finished difference. Result has 159 places, 278 transitions, 3934 flow [2024-06-27 22:45:05,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3793, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3934, PETRI_PLACES=159, PETRI_TRANSITIONS=278} [2024-06-27 22:45:05,062 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 109 predicate places. [2024-06-27 22:45:05,062 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 278 transitions, 3934 flow [2024-06-27 22:45:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:05,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:05,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:45:05,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:05,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -936493190, now seen corresponding path program 1 times [2024-06-27 22:45:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:05,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117276186] [2024-06-27 22:45:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:08,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:08,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117276186] [2024-06-27 22:45:08,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117276186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:08,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:08,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769849796] [2024-06-27 22:45:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:08,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:09,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:09,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 278 transitions, 3934 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:09,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:09,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:09,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:11,975 INFO L124 PetriNetUnfolderBase]: 8319/12357 cut-off events. [2024-06-27 22:45:11,975 INFO L125 PetriNetUnfolderBase]: For 180758/180872 co-relation queries the response was YES. [2024-06-27 22:45:12,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82211 conditions, 12357 events. 8319/12357 cut-off events. For 180758/180872 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 73724 event pairs, 1226 based on Foata normal form. 76/12426 useless extension candidates. Maximal degree in co-relation 82133. Up to 9532 conditions per place. [2024-06-27 22:45:12,089 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 220 selfloop transitions, 118 changer transitions 0/344 dead transitions. [2024-06-27 22:45:12,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 344 transitions, 5206 flow [2024-06-27 22:45:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:45:12,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-27 22:45:12,091 INFO L175 Difference]: Start difference. First operand has 159 places, 278 transitions, 3934 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:45:12,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 344 transitions, 5206 flow [2024-06-27 22:45:12,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 344 transitions, 5076 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:12,527 INFO L231 Difference]: Finished difference. Result has 161 places, 283 transitions, 4165 flow [2024-06-27 22:45:12,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3818, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4165, PETRI_PLACES=161, PETRI_TRANSITIONS=283} [2024-06-27 22:45:12,528 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 111 predicate places. [2024-06-27 22:45:12,528 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 283 transitions, 4165 flow [2024-06-27 22:45:12,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:12,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:12,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:12,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:45:12,529 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:12,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -936313700, now seen corresponding path program 2 times [2024-06-27 22:45:12,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:12,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904493860] [2024-06-27 22:45:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:12,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904493860] [2024-06-27 22:45:16,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904493860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:16,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:16,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927099786] [2024-06-27 22:45:16,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:16,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:16,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:16,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:16,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:16,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 283 transitions, 4165 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:16,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:16,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:16,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:20,103 INFO L124 PetriNetUnfolderBase]: 8311/12315 cut-off events. [2024-06-27 22:45:20,103 INFO L125 PetriNetUnfolderBase]: For 186193/186307 co-relation queries the response was YES. [2024-06-27 22:45:20,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83739 conditions, 12315 events. 8311/12315 cut-off events. For 186193/186307 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 73213 event pairs, 1301 based on Foata normal form. 76/12384 useless extension candidates. Maximal degree in co-relation 83660. Up to 9528 conditions per place. [2024-06-27 22:45:20,219 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 225 selfloop transitions, 133 changer transitions 0/364 dead transitions. [2024-06-27 22:45:20,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 364 transitions, 5456 flow [2024-06-27 22:45:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:45:20,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369565217391304 [2024-06-27 22:45:20,220 INFO L175 Difference]: Start difference. First operand has 161 places, 283 transitions, 4165 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:45:20,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 364 transitions, 5456 flow [2024-06-27 22:45:20,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 364 transitions, 5249 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:20,714 INFO L231 Difference]: Finished difference. Result has 165 places, 285 transitions, 4305 flow [2024-06-27 22:45:20,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4305, PETRI_PLACES=165, PETRI_TRANSITIONS=285} [2024-06-27 22:45:20,714 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 115 predicate places. [2024-06-27 22:45:20,714 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 285 transitions, 4305 flow [2024-06-27 22:45:20,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:20,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:20,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:20,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:45:20,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:20,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -936313452, now seen corresponding path program 4 times [2024-06-27 22:45:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:20,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825166180] [2024-06-27 22:45:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825166180] [2024-06-27 22:45:24,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825166180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:24,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:24,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651623906] [2024-06-27 22:45:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:24,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:24,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:24,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:24,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:24,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 285 transitions, 4305 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:24,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:24,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:24,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:28,072 INFO L124 PetriNetUnfolderBase]: 8591/12773 cut-off events. [2024-06-27 22:45:28,072 INFO L125 PetriNetUnfolderBase]: For 197772/197886 co-relation queries the response was YES. [2024-06-27 22:45:28,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86630 conditions, 12773 events. 8591/12773 cut-off events. For 197772/197886 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 76738 event pairs, 1150 based on Foata normal form. 87/12853 useless extension candidates. Maximal degree in co-relation 86551. Up to 10236 conditions per place. [2024-06-27 22:45:28,198 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 250 selfloop transitions, 85 changer transitions 0/341 dead transitions. [2024-06-27 22:45:28,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 341 transitions, 5375 flow [2024-06-27 22:45:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:45:28,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 22:45:28,200 INFO L175 Difference]: Start difference. First operand has 165 places, 285 transitions, 4305 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:45:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 341 transitions, 5375 flow [2024-06-27 22:45:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 341 transitions, 5112 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:28,764 INFO L231 Difference]: Finished difference. Result has 165 places, 289 transitions, 4332 flow [2024-06-27 22:45:28,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4332, PETRI_PLACES=165, PETRI_TRANSITIONS=289} [2024-06-27 22:45:28,765 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 115 predicate places. [2024-06-27 22:45:28,765 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 289 transitions, 4332 flow [2024-06-27 22:45:28,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:28,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:28,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:28,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:45:28,766 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:28,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash -837640933, now seen corresponding path program 1 times [2024-06-27 22:45:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:28,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676753004] [2024-06-27 22:45:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:28,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676753004] [2024-06-27 22:45:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676753004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:31,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:45:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571135310] [2024-06-27 22:45:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:31,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:45:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:31,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:45:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:45:31,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:31,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 289 transitions, 4332 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:31,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:31,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:31,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:34,304 INFO L124 PetriNetUnfolderBase]: 8525/12854 cut-off events. [2024-06-27 22:45:34,304 INFO L125 PetriNetUnfolderBase]: For 200780/200795 co-relation queries the response was YES. [2024-06-27 22:45:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86123 conditions, 12854 events. 8525/12854 cut-off events. For 200780/200795 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 79009 event pairs, 2068 based on Foata normal form. 15/12864 useless extension candidates. Maximal degree in co-relation 86044. Up to 11816 conditions per place. [2024-06-27 22:45:34,422 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 279 selfloop transitions, 27 changer transitions 0/312 dead transitions. [2024-06-27 22:45:34,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 312 transitions, 5065 flow [2024-06-27 22:45:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:45:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:45:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 22:45:34,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:45:34,424 INFO L175 Difference]: Start difference. First operand has 165 places, 289 transitions, 4332 flow. Second operand 5 states and 120 transitions. [2024-06-27 22:45:34,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 312 transitions, 5065 flow [2024-06-27 22:45:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 312 transitions, 4877 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:34,951 INFO L231 Difference]: Finished difference. Result has 164 places, 289 transitions, 4215 flow [2024-06-27 22:45:34,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4215, PETRI_PLACES=164, PETRI_TRANSITIONS=289} [2024-06-27 22:45:34,951 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 114 predicate places. [2024-06-27 22:45:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 289 transitions, 4215 flow [2024-06-27 22:45:34,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:34,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:34,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:45:34,952 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:34,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1734802573, now seen corresponding path program 1 times [2024-06-27 22:45:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137436881] [2024-06-27 22:45:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:38,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137436881] [2024-06-27 22:45:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137436881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:38,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:38,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:38,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382760993] [2024-06-27 22:45:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:38,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:38,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:38,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:38,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:38,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:38,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 289 transitions, 4215 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:38,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:38,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:38,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:44,032 INFO L124 PetriNetUnfolderBase]: 11596/17496 cut-off events. [2024-06-27 22:45:44,032 INFO L125 PetriNetUnfolderBase]: For 301287/301297 co-relation queries the response was YES. [2024-06-27 22:45:44,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111717 conditions, 17496 events. 11596/17496 cut-off events. For 301287/301297 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 113188 event pairs, 1678 based on Foata normal form. 66/17560 useless extension candidates. Maximal degree in co-relation 111636. Up to 8272 conditions per place. [2024-06-27 22:45:44,208 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 336 selfloop transitions, 137 changer transitions 0/479 dead transitions. [2024-06-27 22:45:44,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 479 transitions, 6746 flow [2024-06-27 22:45:44,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:45:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:45:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 367 transitions. [2024-06-27 22:45:44,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137123745819398 [2024-06-27 22:45:44,210 INFO L175 Difference]: Start difference. First operand has 164 places, 289 transitions, 4215 flow. Second operand 13 states and 367 transitions. [2024-06-27 22:45:44,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 479 transitions, 6746 flow [2024-06-27 22:45:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 479 transitions, 6723 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:45:45,065 INFO L231 Difference]: Finished difference. Result has 177 places, 299 transitions, 4751 flow [2024-06-27 22:45:45,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4751, PETRI_PLACES=177, PETRI_TRANSITIONS=299} [2024-06-27 22:45:45,066 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 127 predicate places. [2024-06-27 22:45:45,066 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 299 transitions, 4751 flow [2024-06-27 22:45:45,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:45,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:45,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:45,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:45:45,066 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:45,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:45,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1625045257, now seen corresponding path program 2 times [2024-06-27 22:45:45,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:45,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553779857] [2024-06-27 22:45:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553779857] [2024-06-27 22:45:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553779857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887468075] [2024-06-27 22:45:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:49,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:45:49,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 299 transitions, 4751 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:49,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:49,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:45:49,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:54,892 INFO L124 PetriNetUnfolderBase]: 13673/20697 cut-off events. [2024-06-27 22:45:54,893 INFO L125 PetriNetUnfolderBase]: For 415562/415572 co-relation queries the response was YES. [2024-06-27 22:45:55,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134996 conditions, 20697 events. 13673/20697 cut-off events. For 415562/415572 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 139214 event pairs, 3035 based on Foata normal form. 66/20761 useless extension candidates. Maximal degree in co-relation 134911. Up to 14158 conditions per place. [2024-06-27 22:45:55,098 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 336 selfloop transitions, 136 changer transitions 0/478 dead transitions. [2024-06-27 22:45:55,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 478 transitions, 7108 flow [2024-06-27 22:45:55,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:45:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:45:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 387 transitions. [2024-06-27 22:45:55,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6009316770186336 [2024-06-27 22:45:55,100 INFO L175 Difference]: Start difference. First operand has 177 places, 299 transitions, 4751 flow. Second operand 14 states and 387 transitions. [2024-06-27 22:45:55,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 478 transitions, 7108 flow [2024-06-27 22:45:56,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 478 transitions, 6805 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:56,340 INFO L231 Difference]: Finished difference. Result has 183 places, 304 transitions, 4882 flow [2024-06-27 22:45:56,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4462, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4882, PETRI_PLACES=183, PETRI_TRANSITIONS=304} [2024-06-27 22:45:56,341 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 133 predicate places. [2024-06-27 22:45:56,341 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 304 transitions, 4882 flow [2024-06-27 22:45:56,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:56,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:56,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:56,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:45:56,341 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:56,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1625193127, now seen corresponding path program 3 times [2024-06-27 22:45:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746386629] [2024-06-27 22:45:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746386629] [2024-06-27 22:46:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746386629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:00,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209369690] [2024-06-27 22:46:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:00,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:46:00,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 304 transitions, 4882 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:00,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:00,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:46:00,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:06,344 INFO L124 PetriNetUnfolderBase]: 14377/21777 cut-off events. [2024-06-27 22:46:06,344 INFO L125 PetriNetUnfolderBase]: For 422172/422182 co-relation queries the response was YES. [2024-06-27 22:46:06,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138950 conditions, 21777 events. 14377/21777 cut-off events. For 422172/422182 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 148069 event pairs, 3685 based on Foata normal form. 74/21849 useless extension candidates. Maximal degree in co-relation 138863. Up to 17120 conditions per place. [2024-06-27 22:46:06,675 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 325 selfloop transitions, 135 changer transitions 0/466 dead transitions. [2024-06-27 22:46:06,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 466 transitions, 6940 flow [2024-06-27 22:46:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:46:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:46:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 376 transitions. [2024-06-27 22:46:06,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838509316770186 [2024-06-27 22:46:06,677 INFO L175 Difference]: Start difference. First operand has 183 places, 304 transitions, 4882 flow. Second operand 14 states and 376 transitions. [2024-06-27 22:46:06,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 466 transitions, 6940 flow [2024-06-27 22:46:08,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 466 transitions, 6688 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 22:46:08,049 INFO L231 Difference]: Finished difference. Result has 187 places, 306 transitions, 4978 flow [2024-06-27 22:46:08,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4636, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4978, PETRI_PLACES=187, PETRI_TRANSITIONS=306} [2024-06-27 22:46:08,050 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 137 predicate places. [2024-06-27 22:46:08,050 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 306 transitions, 4978 flow [2024-06-27 22:46:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:08,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:08,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:08,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:46:08,050 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:08,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 909614481, now seen corresponding path program 4 times [2024-06-27 22:46:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466609408] [2024-06-27 22:46:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:12,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466609408] [2024-06-27 22:46:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466609408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:12,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:12,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235673917] [2024-06-27 22:46:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:12,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:46:12,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 306 transitions, 4978 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:12,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:12,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:46:12,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:19,315 INFO L124 PetriNetUnfolderBase]: 15343/23237 cut-off events. [2024-06-27 22:46:19,315 INFO L125 PetriNetUnfolderBase]: For 446017/446073 co-relation queries the response was YES. [2024-06-27 22:46:19,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147006 conditions, 23237 events. 15343/23237 cut-off events. For 446017/446073 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 159585 event pairs, 4343 based on Foata normal form. 93/23325 useless extension candidates. Maximal degree in co-relation 146917. Up to 19938 conditions per place. [2024-06-27 22:46:19,548 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 350 selfloop transitions, 70 changer transitions 0/426 dead transitions. [2024-06-27 22:46:19,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 426 transitions, 6640 flow [2024-06-27 22:46:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:46:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:46:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-06-27 22:46:19,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471014492753623 [2024-06-27 22:46:19,550 INFO L175 Difference]: Start difference. First operand has 187 places, 306 transitions, 4978 flow. Second operand 12 states and 302 transitions. [2024-06-27 22:46:19,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 426 transitions, 6640 flow [2024-06-27 22:46:21,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 426 transitions, 6327 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 22:46:21,036 INFO L231 Difference]: Finished difference. Result has 187 places, 308 transitions, 4892 flow [2024-06-27 22:46:21,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4892, PETRI_PLACES=187, PETRI_TRANSITIONS=308} [2024-06-27 22:46:21,037 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 137 predicate places. [2024-06-27 22:46:21,037 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 308 transitions, 4892 flow [2024-06-27 22:46:21,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:21,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:21,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:21,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:46:21,038 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:21,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:21,038 INFO L85 PathProgramCache]: Analyzing trace with hash -29667151, now seen corresponding path program 5 times [2024-06-27 22:46:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:21,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915985559] [2024-06-27 22:46:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:21,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915985559] [2024-06-27 22:46:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915985559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186091873] [2024-06-27 22:46:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:25,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:46:25,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 308 transitions, 4892 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:25,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:25,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:46:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:31,963 INFO L124 PetriNetUnfolderBase]: 16309/24708 cut-off events. [2024-06-27 22:46:31,963 INFO L125 PetriNetUnfolderBase]: For 474379/474435 co-relation queries the response was YES. [2024-06-27 22:46:32,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153310 conditions, 24708 events. 16309/24708 cut-off events. For 474379/474435 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 172400 event pairs, 4656 based on Foata normal form. 93/24796 useless extension candidates. Maximal degree in co-relation 153220. Up to 21420 conditions per place. [2024-06-27 22:46:32,528 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 337 selfloop transitions, 65 changer transitions 0/408 dead transitions. [2024-06-27 22:46:32,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 408 transitions, 6418 flow [2024-06-27 22:46:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 22:46:32,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 22:46:32,529 INFO L175 Difference]: Start difference. First operand has 187 places, 308 transitions, 4892 flow. Second operand 10 states and 253 transitions. [2024-06-27 22:46:32,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 408 transitions, 6418 flow [2024-06-27 22:46:33,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 408 transitions, 6239 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 22:46:33,953 INFO L231 Difference]: Finished difference. Result has 187 places, 310 transitions, 4928 flow [2024-06-27 22:46:33,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4713, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4928, PETRI_PLACES=187, PETRI_TRANSITIONS=310} [2024-06-27 22:46:33,953 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 137 predicate places. [2024-06-27 22:46:33,954 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 310 transitions, 4928 flow [2024-06-27 22:46:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:33,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:33,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:33,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:46:33,954 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:33,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 904104231, now seen corresponding path program 6 times [2024-06-27 22:46:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095226170] [2024-06-27 22:46:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095226170] [2024-06-27 22:46:38,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095226170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:38,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110204038] [2024-06-27 22:46:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:38,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:38,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:38,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:38,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:46:38,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 310 transitions, 4928 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:38,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:38,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:46:38,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:45,866 INFO L124 PetriNetUnfolderBase]: 18337/27776 cut-off events. [2024-06-27 22:46:45,866 INFO L125 PetriNetUnfolderBase]: For 538003/538057 co-relation queries the response was YES. [2024-06-27 22:46:46,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170311 conditions, 27776 events. 18337/27776 cut-off events. For 538003/538057 co-relation queries the response was YES. Maximal size of possible extension queue 1266. Compared 197105 event pairs, 5077 based on Foata normal form. 85/27856 useless extension candidates. Maximal degree in co-relation 170220. Up to 19732 conditions per place. [2024-06-27 22:46:46,176 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 352 selfloop transitions, 68 changer transitions 0/426 dead transitions. [2024-06-27 22:46:46,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 426 transitions, 6733 flow [2024-06-27 22:46:46,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 22:46:46,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-06-27 22:46:46,178 INFO L175 Difference]: Start difference. First operand has 187 places, 310 transitions, 4928 flow. Second operand 10 states and 261 transitions. [2024-06-27 22:46:46,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 426 transitions, 6733 flow [2024-06-27 22:46:47,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 426 transitions, 6560 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:46:47,741 INFO L231 Difference]: Finished difference. Result has 190 places, 317 transitions, 5103 flow [2024-06-27 22:46:47,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5103, PETRI_PLACES=190, PETRI_TRANSITIONS=317} [2024-06-27 22:46:47,741 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 140 predicate places. [2024-06-27 22:46:47,741 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 317 transitions, 5103 flow [2024-06-27 22:46:47,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:47,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:47,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:47,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:46:47,742 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:47,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:47,742 INFO L85 PathProgramCache]: Analyzing trace with hash -24089569, now seen corresponding path program 1 times [2024-06-27 22:46:47,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:47,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694816980] [2024-06-27 22:46:47,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:47,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:53,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694816980] [2024-06-27 22:46:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694816980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:53,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:53,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:53,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267777679] [2024-06-27 22:46:53,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:53,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:46:53,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 317 transitions, 5103 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:53,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:53,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:46:53,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:01,347 INFO L124 PetriNetUnfolderBase]: 19039/29006 cut-off events. [2024-06-27 22:47:01,347 INFO L125 PetriNetUnfolderBase]: For 575801/575855 co-relation queries the response was YES. [2024-06-27 22:47:01,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176392 conditions, 29006 events. 19039/29006 cut-off events. For 575801/575855 co-relation queries the response was YES. Maximal size of possible extension queue 1330. Compared 209176 event pairs, 5506 based on Foata normal form. 77/29078 useless extension candidates. Maximal degree in co-relation 176299. Up to 22665 conditions per place. [2024-06-27 22:47:01,902 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 360 selfloop transitions, 77 changer transitions 0/443 dead transitions. [2024-06-27 22:47:01,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 443 transitions, 6855 flow [2024-06-27 22:47:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:47:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:47:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2024-06-27 22:47:01,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-27 22:47:01,904 INFO L175 Difference]: Start difference. First operand has 190 places, 317 transitions, 5103 flow. Second operand 12 states and 306 transitions. [2024-06-27 22:47:01,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 443 transitions, 6855 flow [2024-06-27 22:47:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 443 transitions, 6697 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:03,817 INFO L231 Difference]: Finished difference. Result has 196 places, 319 transitions, 5190 flow [2024-06-27 22:47:03,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4945, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5190, PETRI_PLACES=196, PETRI_TRANSITIONS=319} [2024-06-27 22:47:03,818 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 146 predicate places. [2024-06-27 22:47:03,818 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 319 transitions, 5190 flow [2024-06-27 22:47:03,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:03,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:03,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:03,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:47:03,818 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:03,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash -208504575, now seen corresponding path program 1 times [2024-06-27 22:47:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:03,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324556140] [2024-06-27 22:47:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat