./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.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/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:29:02,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:29:02,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:29:02,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:29:02,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:29:02,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:29:02,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:29:02,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:29:02,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:29:02,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:29:02,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:29:02,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:29:02,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:29:02,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:29:02,659 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:29:02,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:29:02,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:29:02,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:29:02,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:29:02,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:29:02,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:29:02,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:29:02,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:29:02,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:29:02,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:29:02,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:29:02,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:29:02,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:29:02,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:29:02,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:29:02,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:29:02,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:29:02,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:29:02,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:29:02,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:29:02,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:29:02,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:29:02,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:29:02,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:29:02,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:29:02,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:29:02,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:29:02,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:29:02,672 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:29:02,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:29:02,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:29:02,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:29:02,949 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:29:02,950 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:29:02,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 23:29:04,109 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:29:04,326 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:29:04,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 23:29:04,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffaf1e57/08ddf88c2fa64b0791ae8559f6edf878/FLAG5458c4ca4 [2024-06-27 23:29:04,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ffaf1e57/08ddf88c2fa64b0791ae8559f6edf878 [2024-06-27 23:29:04,354 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:29:04,354 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:29:04,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.yml/witness.yml [2024-06-27 23:29:04,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:29:04,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:29:04,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:29:04,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:29:04,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:29:04,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:29:04" (1/2) ... [2024-06-27 23:29:04,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c8d110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:29:04, skipping insertion in model container [2024-06-27 23:29:04,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:29:04" (1/2) ... [2024-06-27 23:29:04,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2752cbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:29:04, skipping insertion in model container [2024-06-27 23:29:04,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:04" (2/2) ... [2024-06-27 23:29:04,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c8d110 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:04, skipping insertion in model container [2024-06-27 23:29:04,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:04" (2/2) ... [2024-06-27 23:29:04,418 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:29:04,441 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:29:04,442 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:29:04,442 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:29:04,442 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:29:04,443 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 23:29:04,481 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:29:04,823 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:29:04,833 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:29:04,934 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:29:04,997 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:29:04,998 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:29:04 WrapperNode [2024-06-27 23:29:04,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:29:04,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:29:04,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:29:04,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:29:05,005 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,031 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,074 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-27 23:29:05,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:29:05,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:29:05,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:29:05,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:29:05,087 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,087 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,091 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,118 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:29:05,119 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,119 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,125 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,126 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,127 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,129 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:29:05,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:29:05,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:29:05,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:29:05,133 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 11:29:04" (1/1) ... [2024-06-27 23:29:05,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:29:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:29:05,197 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 23:29:05,238 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 23:29:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:29:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:29:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:29:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:29:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:29:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:29:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:29:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:29:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:29:05,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:29:05,255 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 23:29:05,369 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:29:05,370 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:29:05,662 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:29:05,662 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:29:05,768 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:29:05,768 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:29:05,768 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:29:05 BoogieIcfgContainer [2024-06-27 23:29:05,769 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:29:05,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:29:05,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:29:05,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:29:05,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:29:04" (1/4) ... [2024-06-27 23:29:05,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e89953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:29:05, skipping insertion in model container [2024-06-27 23:29:05,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:29:04" (2/4) ... [2024-06-27 23:29:05,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e89953 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:29:05, skipping insertion in model container [2024-06-27 23:29:05,774 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 11:29:04" (3/4) ... [2024-06-27 23:29:05,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e89953 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:29:05, skipping insertion in model container [2024-06-27 23:29:05,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:29:05" (4/4) ... [2024-06-27 23:29:05,777 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-27 23:29:05,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:29:05,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:29:05,790 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:29:05,848 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:29:05,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:29:05,895 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 23:29:05,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:29:05,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:29:05,899 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:29:05,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 23:29:05,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:29:05,925 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;@2766b8bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:29:05,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:29:05,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:29:05,931 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:29:05,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:29:05,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:05,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:29:05,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:05,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash 364174474, now seen corresponding path program 1 times [2024-06-27 23:29:05,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65602846] [2024-06-27 23:29:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:06,884 INFO 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 23:29:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65602846] [2024-06-27 23:29:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65602846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:06,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:29:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334098450] [2024-06-27 23:29:06,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:06,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:29:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:06,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:29:06,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:29:06,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:29:06,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 23:29:06,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:06,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:29:06,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:07,060 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-27 23:29:07,061 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:29:07,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1111 event pairs, 97 based on Foata normal form. 1/294 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-27 23:29:07,066 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 23:29:07,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-27 23:29:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:29:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:29:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-27 23:29:07,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 23:29:07,077 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 50 transitions. [2024-06-27 23:29:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-27 23:29:07,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:07,081 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 23:29:07,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 23:29:07,085 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 23:29:07,085 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 23:29:07,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 23:29:07,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:07,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:07,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:29:07,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:07,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2079351977, now seen corresponding path program 1 times [2024-06-27 23:29:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:07,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054536918] [2024-06-27 23:29:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:07,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:07,646 INFO 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 23:29:07,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:07,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054536918] [2024-06-27 23:29:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054536918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:29:07,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528162508] [2024-06-27 23:29:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:29:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:29:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:29:07,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:07,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 23:29:07,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:07,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:07,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:07,755 INFO L124 PetriNetUnfolderBase]: 186/336 cut-off events. [2024-06-27 23:29:07,755 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-27 23:29:07,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 336 events. 186/336 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1173 event pairs, 94 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-27 23:29:07,757 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 23:29:07,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 157 flow [2024-06-27 23:29:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:29:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:29:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-27 23:29:07,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 23:29:07,759 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-27 23:29:07,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 157 flow [2024-06-27 23:29:07,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:29:07,760 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 23:29:07,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 23:29:07,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 23:29:07,761 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 23:29:07,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 23:29:07,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:07,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:07,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:29:07,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:07,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash 35402953, now seen corresponding path program 1 times [2024-06-27 23:29:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614459095] [2024-06-27 23:29:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:07,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:08,206 INFO 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 23:29:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614459095] [2024-06-27 23:29:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614459095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:08,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:08,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:29:08,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496443791] [2024-06-27 23:29:08,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:29:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:08,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:29:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:29:08,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:08,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 23:29:08,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:08,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:08,341 INFO L124 PetriNetUnfolderBase]: 180/326 cut-off events. [2024-06-27 23:29:08,341 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-27 23:29:08,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 326 events. 180/326 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1108 event pairs, 52 based on Foata normal form. 4/329 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-27 23:29:08,343 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-27 23:29:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 209 flow [2024-06-27 23:29:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:29:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:29:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-27 23:29:08,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:29:08,345 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 75 transitions. [2024-06-27 23:29:08,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 209 flow [2024-06-27 23:29:08,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:08,347 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-27 23:29:08,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-27 23:29:08,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-27 23:29:08,348 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-27 23:29:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 23:29:08,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:08,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:08,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:29:08,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:08,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2055807826, now seen corresponding path program 1 times [2024-06-27 23:29:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:08,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209904089] [2024-06-27 23:29:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:09,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:09,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209904089] [2024-06-27 23:29:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209904089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:09,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:09,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:09,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146410540] [2024-06-27 23:29:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:09,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:09,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:09,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:29:09,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:09,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:09,391 INFO L124 PetriNetUnfolderBase]: 176/318 cut-off events. [2024-06-27 23:29:09,392 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-27 23:29:09,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 318 events. 176/318 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 30 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-27 23:29:09,394 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-27 23:29:09,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 223 flow [2024-06-27 23:29:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 23:29:09,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 23:29:09,395 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 83 transitions. [2024-06-27 23:29:09,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 223 flow [2024-06-27 23:29:09,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:09,397 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-27 23:29:09,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-27 23:29:09,398 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 23:29:09,398 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-27 23:29:09,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:29:09,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:09,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:09,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:29:09,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:09,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:09,399 INFO L85 PathProgramCache]: Analyzing trace with hash -955188088, now seen corresponding path program 1 times [2024-06-27 23:29:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:09,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822996605] [2024-06-27 23:29:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:09,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:10,014 INFO 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 23:29:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822996605] [2024-06-27 23:29:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822996605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:29:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845146109] [2024-06-27 23:29:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:29:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:29:10,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:29:10,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 23:29:10,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:10,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:10,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:10,235 INFO L124 PetriNetUnfolderBase]: 147/282 cut-off events. [2024-06-27 23:29:10,235 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-27 23:29:10,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 282 events. 147/282 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 53 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-27 23:29:10,238 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-06-27 23:29:10,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 204 flow [2024-06-27 23:29:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-27 23:29:10,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:29:10,239 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 6 states and 65 transitions. [2024-06-27 23:29:10,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 204 flow [2024-06-27 23:29:10,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 182 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:10,242 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 138 flow [2024-06-27 23:29:10,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 23:29:10,243 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-27 23:29:10,243 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 138 flow [2024-06-27 23:29:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 23:29:10,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:10,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:10,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:29:10,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:10,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:10,244 INFO L85 PathProgramCache]: Analyzing trace with hash 453941276, now seen corresponding path program 1 times [2024-06-27 23:29:10,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:10,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213733112] [2024-06-27 23:29:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:10,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:11,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213733112] [2024-06-27 23:29:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213733112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249094544] [2024-06-27 23:29:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:11,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:11,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:11,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:11,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:11,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:11,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:11,531 INFO L124 PetriNetUnfolderBase]: 172/312 cut-off events. [2024-06-27 23:29:11,532 INFO L125 PetriNetUnfolderBase]: For 582/582 co-relation queries the response was YES. [2024-06-27 23:29:11,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 312 events. 172/312 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1052 event pairs, 64 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 945. Up to 298 conditions per place. [2024-06-27 23:29:11,534 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 26 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-06-27 23:29:11,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 230 flow [2024-06-27 23:29:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-27 23:29:11,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:29:11,535 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 138 flow. Second operand 6 states and 63 transitions. [2024-06-27 23:29:11,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 230 flow [2024-06-27 23:29:11,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 217 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:11,538 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 162 flow [2024-06-27 23:29:11,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 23:29:11,538 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 23:29:11,538 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 162 flow [2024-06-27 23:29:11,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:11,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:11,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:11,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:29:11,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:11,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:11,540 INFO L85 PathProgramCache]: Analyzing trace with hash 876794845, now seen corresponding path program 1 times [2024-06-27 23:29:11,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:11,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59749094] [2024-06-27 23:29:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:12,193 INFO 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 23:29:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59749094] [2024-06-27 23:29:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59749094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828210046] [2024-06-27 23:29:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:12,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:12,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:12,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:12,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:12,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:12,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:12,427 INFO L124 PetriNetUnfolderBase]: 179/325 cut-off events. [2024-06-27 23:29:12,427 INFO L125 PetriNetUnfolderBase]: For 778/778 co-relation queries the response was YES. [2024-06-27 23:29:12,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 325 events. 179/325 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1085 event pairs, 64 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1054. Up to 302 conditions per place. [2024-06-27 23:29:12,430 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 30 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-06-27 23:29:12,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 292 flow [2024-06-27 23:29:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 23:29:12,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380952380952381 [2024-06-27 23:29:12,431 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 162 flow. Second operand 7 states and 71 transitions. [2024-06-27 23:29:12,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 292 flow [2024-06-27 23:29:12,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 271 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:12,434 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 210 flow [2024-06-27 23:29:12,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-27 23:29:12,435 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-27 23:29:12,435 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 210 flow [2024-06-27 23:29:12,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:12,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:12,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:12,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:29:12,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:12,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 876944575, now seen corresponding path program 2 times [2024-06-27 23:29:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331515809] [2024-06-27 23:29:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331515809] [2024-06-27 23:29:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331515809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750340847] [2024-06-27 23:29:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:13,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:13,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:13,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:13,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:13,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:13,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:13,354 INFO L124 PetriNetUnfolderBase]: 182/331 cut-off events. [2024-06-27 23:29:13,355 INFO L125 PetriNetUnfolderBase]: For 1050/1050 co-relation queries the response was YES. [2024-06-27 23:29:13,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 331 events. 182/331 cut-off events. For 1050/1050 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1119 event pairs, 66 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1157. Up to 297 conditions per place. [2024-06-27 23:29:13,357 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2024-06-27 23:29:13,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 356 flow [2024-06-27 23:29:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 23:29:13,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-27 23:29:13,360 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 210 flow. Second operand 7 states and 72 transitions. [2024-06-27 23:29:13,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 356 flow [2024-06-27 23:29:13,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 340 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:13,363 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 263 flow [2024-06-27 23:29:13,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-27 23:29:13,369 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 23:29:13,369 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 263 flow [2024-06-27 23:29:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:13,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:29:13,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:13,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1497274915, now seen corresponding path program 3 times [2024-06-27 23:29:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149550201] [2024-06-27 23:29:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:13,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:13,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149550201] [2024-06-27 23:29:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149550201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:13,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:13,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452557701] [2024-06-27 23:29:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:13,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:14,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:14,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:14,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:14,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:14,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:14,212 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-27 23:29:14,217 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2024-06-27 23:29:14,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 327 events. 180/327 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1096 event pairs, 63 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1211. Up to 304 conditions per place. [2024-06-27 23:29:14,227 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-27 23:29:14,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 387 flow [2024-06-27 23:29:14,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 23:29:14,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-27 23:29:14,228 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 263 flow. Second operand 7 states and 74 transitions. [2024-06-27 23:29:14,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 387 flow [2024-06-27 23:29:14,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 364 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:14,231 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 271 flow [2024-06-27 23:29:14,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-27 23:29:14,232 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-27 23:29:14,232 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 271 flow [2024-06-27 23:29:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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 23:29:14,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:14,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:14,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:29:14,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:14,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash 882516701, now seen corresponding path program 1 times [2024-06-27 23:29:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898204285] [2024-06-27 23:29:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:15,488 INFO 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 23:29:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898204285] [2024-06-27 23:29:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898204285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:15,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:15,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022998314] [2024-06-27 23:29:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:15,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:15,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:15,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:15,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:15,706 INFO L124 PetriNetUnfolderBase]: 176/321 cut-off events. [2024-06-27 23:29:15,707 INFO L125 PetriNetUnfolderBase]: For 1614/1614 co-relation queries the response was YES. [2024-06-27 23:29:15,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 321 events. 176/321 cut-off events. For 1614/1614 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1062 event pairs, 62 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1224. Up to 300 conditions per place. [2024-06-27 23:29:15,709 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-27 23:29:15,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 397 flow [2024-06-27 23:29:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 23:29:15,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-27 23:29:15,710 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 271 flow. Second operand 7 states and 72 transitions. [2024-06-27 23:29:15,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 397 flow [2024-06-27 23:29:15,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 350 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:15,712 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 267 flow [2024-06-27 23:29:15,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-27 23:29:15,713 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-27 23:29:15,713 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 267 flow [2024-06-27 23:29:15,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:15,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:15,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:15,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:29:15,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:15,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1410717195, now seen corresponding path program 1 times [2024-06-27 23:29:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391873807] [2024-06-27 23:29:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:16,288 INFO 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 23:29:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:16,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391873807] [2024-06-27 23:29:16,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391873807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:16,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:16,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268457302] [2024-06-27 23:29:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:16,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:16,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:16,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:16,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:16,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:16,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:16,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:16,562 INFO L124 PetriNetUnfolderBase]: 187/342 cut-off events. [2024-06-27 23:29:16,563 INFO L125 PetriNetUnfolderBase]: For 1779/1779 co-relation queries the response was YES. [2024-06-27 23:29:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 342 events. 187/342 cut-off events. For 1779/1779 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1172 event pairs, 45 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1325. Up to 289 conditions per place. [2024-06-27 23:29:16,565 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 42 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2024-06-27 23:29:16,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 451 flow [2024-06-27 23:29:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:29:16,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 23:29:16,566 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 267 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:29:16,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 451 flow [2024-06-27 23:29:16,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 424 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:16,570 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 335 flow [2024-06-27 23:29:16,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=335, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-27 23:29:16,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 23:29:16,571 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 335 flow [2024-06-27 23:29:16,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:16,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:16,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:29:16,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:16,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:16,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1410837165, now seen corresponding path program 2 times [2024-06-27 23:29:16,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:16,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836279451] [2024-06-27 23:29:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:16,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:17,234 INFO 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 23:29:17,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:17,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836279451] [2024-06-27 23:29:17,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836279451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:17,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:17,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372097100] [2024-06-27 23:29:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:17,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:17,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:17,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:17,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:17,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:17,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:17,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:17,477 INFO L124 PetriNetUnfolderBase]: 195/355 cut-off events. [2024-06-27 23:29:17,477 INFO L125 PetriNetUnfolderBase]: For 2230/2230 co-relation queries the response was YES. [2024-06-27 23:29:17,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 355 events. 195/355 cut-off events. For 2230/2230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1240 event pairs, 45 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1502. Up to 288 conditions per place. [2024-06-27 23:29:17,480 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 22 changer transitions 0/67 dead transitions. [2024-06-27 23:29:17,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 549 flow [2024-06-27 23:29:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:29:17,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:17,482 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 335 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:29:17,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 549 flow [2024-06-27 23:29:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 528 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:17,485 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 408 flow [2024-06-27 23:29:17,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=408, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-27 23:29:17,486 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-27 23:29:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 408 flow [2024-06-27 23:29:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:17,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:17,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:17,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:29:17,488 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:17,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:17,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2062292787, now seen corresponding path program 1 times [2024-06-27 23:29:17,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:17,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037784258] [2024-06-27 23:29:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:17,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:18,525 INFO 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 23:29:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:18,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037784258] [2024-06-27 23:29:18,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037784258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:18,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:18,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471298678] [2024-06-27 23:29:18,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:18,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:18,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:18,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:18,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:18,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:18,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:18,770 INFO L124 PetriNetUnfolderBase]: 198/358 cut-off events. [2024-06-27 23:29:18,770 INFO L125 PetriNetUnfolderBase]: For 2874/2874 co-relation queries the response was YES. [2024-06-27 23:29:18,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 358 events. 198/358 cut-off events. For 2874/2874 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1260 event pairs, 65 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1632. Up to 332 conditions per place. [2024-06-27 23:29:18,772 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-27 23:29:18,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 566 flow [2024-06-27 23:29:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 23:29:18,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-27 23:29:18,774 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 408 flow. Second operand 7 states and 74 transitions. [2024-06-27 23:29:18,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 566 flow [2024-06-27 23:29:18,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 534 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:18,779 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 427 flow [2024-06-27 23:29:18,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2024-06-27 23:29:18,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 23:29:18,780 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 427 flow [2024-06-27 23:29:18,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:18,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:18,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:18,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:29:18,781 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1849076037, now seen corresponding path program 2 times [2024-06-27 23:29:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:18,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554205848] [2024-06-27 23:29:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554205848] [2024-06-27 23:29:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554205848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:19,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:19,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945138787] [2024-06-27 23:29:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:19,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:19,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:19,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:19,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:19,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:19,993 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-27 23:29:19,994 INFO L125 PetriNetUnfolderBase]: For 3313/3313 co-relation queries the response was YES. [2024-06-27 23:29:19,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 363 events. 201/363 cut-off events. For 3313/3313 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1289 event pairs, 67 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1728. Up to 316 conditions per place. [2024-06-27 23:29:19,996 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 25 changer transitions 0/70 dead transitions. [2024-06-27 23:29:19,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 637 flow [2024-06-27 23:29:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-27 23:29:19,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-27 23:29:19,998 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 427 flow. Second operand 7 states and 76 transitions. [2024-06-27 23:29:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 637 flow [2024-06-27 23:29:20,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 602 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:20,003 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 483 flow [2024-06-27 23:29:20,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-06-27 23:29:20,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-27 23:29:20,004 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 483 flow [2024-06-27 23:29:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:20,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:20,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:20,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:29:20,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:20,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1587968871, now seen corresponding path program 3 times [2024-06-27 23:29:20,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:20,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125305577] [2024-06-27 23:29:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:20,914 INFO 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 23:29:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125305577] [2024-06-27 23:29:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125305577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:20,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:20,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:20,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976561547] [2024-06-27 23:29:20,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:20,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:20,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:20,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:20,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:20,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:20,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:20,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:21,111 INFO L124 PetriNetUnfolderBase]: 204/369 cut-off events. [2024-06-27 23:29:21,111 INFO L125 PetriNetUnfolderBase]: For 3887/3887 co-relation queries the response was YES. [2024-06-27 23:29:21,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 369 events. 204/369 cut-off events. For 3887/3887 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1315 event pairs, 67 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1830. Up to 333 conditions per place. [2024-06-27 23:29:21,114 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 20 changer transitions 0/71 dead transitions. [2024-06-27 23:29:21,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 655 flow [2024-06-27 23:29:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:21,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 23:29:21,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-27 23:29:21,115 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 483 flow. Second operand 7 states and 74 transitions. [2024-06-27 23:29:21,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 655 flow [2024-06-27 23:29:21,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 616 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:21,120 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 513 flow [2024-06-27 23:29:21,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=513, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-27 23:29:21,121 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-27 23:29:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 513 flow [2024-06-27 23:29:21,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:29:21,122 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:21,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1849313373, now seen corresponding path program 3 times [2024-06-27 23:29:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149891239] [2024-06-27 23:29:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:21,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:21,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149891239] [2024-06-27 23:29:21,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149891239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:21,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:21,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928422357] [2024-06-27 23:29:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:21,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:21,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:21,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:21,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:21,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:21,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:21,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:22,157 INFO L124 PetriNetUnfolderBase]: 212/384 cut-off events. [2024-06-27 23:29:22,157 INFO L125 PetriNetUnfolderBase]: For 4382/4382 co-relation queries the response was YES. [2024-06-27 23:29:22,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 384 events. 212/384 cut-off events. For 4382/4382 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 45 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1963. Up to 287 conditions per place. [2024-06-27 23:29:22,161 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 30 changer transitions 0/82 dead transitions. [2024-06-27 23:29:22,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 831 flow [2024-06-27 23:29:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:29:22,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:22,163 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 513 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:29:22,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 831 flow [2024-06-27 23:29:22,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 784 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:22,179 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 593 flow [2024-06-27 23:29:22,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-06-27 23:29:22,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 23:29:22,180 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 593 flow [2024-06-27 23:29:22,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:22,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:22,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:22,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:29:22,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:22,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -359060543, now seen corresponding path program 4 times [2024-06-27 23:29:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193592341] [2024-06-27 23:29:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:22,733 INFO 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 23:29:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193592341] [2024-06-27 23:29:22,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193592341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:22,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:22,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130176702] [2024-06-27 23:29:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:22,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 593 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:22,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:22,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:22,955 INFO L124 PetriNetUnfolderBase]: 219/395 cut-off events. [2024-06-27 23:29:22,955 INFO L125 PetriNetUnfolderBase]: For 5028/5028 co-relation queries the response was YES. [2024-06-27 23:29:22,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 395 events. 219/395 cut-off events. For 5028/5028 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1423 event pairs, 41 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 2130. Up to 337 conditions per place. [2024-06-27 23:29:22,957 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 24 changer transitions 0/90 dead transitions. [2024-06-27 23:29:22,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 870 flow [2024-06-27 23:29:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:29:22,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:29:22,959 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 593 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:29:22,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 870 flow [2024-06-27 23:29:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 824 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:22,964 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 683 flow [2024-06-27 23:29:22,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-27 23:29:22,965 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-27 23:29:22,965 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 683 flow [2024-06-27 23:29:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:22,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:22,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:29:22,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1607300393, now seen corresponding path program 5 times [2024-06-27 23:29:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425770293] [2024-06-27 23:29:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:23,553 INFO 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 23:29:23,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425770293] [2024-06-27 23:29:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425770293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:23,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463686147] [2024-06-27 23:29:23,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:23,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:23,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:23,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:23,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 683 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:23,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:23,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:23,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:23,818 INFO L124 PetriNetUnfolderBase]: 222/400 cut-off events. [2024-06-27 23:29:23,818 INFO L125 PetriNetUnfolderBase]: For 5672/5672 co-relation queries the response was YES. [2024-06-27 23:29:23,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 400 events. 222/400 cut-off events. For 5672/5672 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1442 event pairs, 41 based on Foata normal form. 1/400 useless extension candidates. Maximal degree in co-relation 2245. Up to 342 conditions per place. [2024-06-27 23:29:23,821 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-27 23:29:23,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 934 flow [2024-06-27 23:29:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:29:23,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:29:23,822 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 683 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:29:23,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 934 flow [2024-06-27 23:29:23,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 884 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:23,831 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 732 flow [2024-06-27 23:29:23,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=732, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-27 23:29:23,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-27 23:29:23,831 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 732 flow [2024-06-27 23:29:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:23,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:23,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:29:23,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:23,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:23,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1607420363, now seen corresponding path program 6 times [2024-06-27 23:29:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081715755] [2024-06-27 23:29:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:24,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081715755] [2024-06-27 23:29:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081715755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642417817] [2024-06-27 23:29:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:24,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:24,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:24,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 732 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:24,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:24,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:24,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:24,751 INFO L124 PetriNetUnfolderBase]: 220/398 cut-off events. [2024-06-27 23:29:24,751 INFO L125 PetriNetUnfolderBase]: For 6134/6134 co-relation queries the response was YES. [2024-06-27 23:29:24,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 398 events. 220/398 cut-off events. For 6134/6134 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1437 event pairs, 43 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 2253. Up to 320 conditions per place. [2024-06-27 23:29:24,755 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-27 23:29:24,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 1010 flow [2024-06-27 23:29:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:29:24,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:29:24,757 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 732 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:29:24,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 1010 flow [2024-06-27 23:29:24,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 958 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:24,766 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 769 flow [2024-06-27 23:29:24,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=769, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-06-27 23:29:24,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-27 23:29:24,767 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 769 flow [2024-06-27 23:29:24,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:24,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:24,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:29:24,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:24,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1607420549, now seen corresponding path program 4 times [2024-06-27 23:29:24,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:24,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891252868] [2024-06-27 23:29:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:24,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:25,556 INFO 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 23:29:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891252868] [2024-06-27 23:29:25,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891252868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:25,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:25,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95439372] [2024-06-27 23:29:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:25,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:25,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:25,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:25,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:25,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:25,776 INFO L124 PetriNetUnfolderBase]: 218/394 cut-off events. [2024-06-27 23:29:25,777 INFO L125 PetriNetUnfolderBase]: For 6627/6627 co-relation queries the response was YES. [2024-06-27 23:29:25,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 394 events. 218/394 cut-off events. For 6627/6627 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1438 event pairs, 43 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 2266. Up to 366 conditions per place. [2024-06-27 23:29:25,779 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 76 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-27 23:29:25,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 977 flow [2024-06-27 23:29:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 23:29:25,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 23:29:25,783 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 769 flow. Second operand 8 states and 82 transitions. [2024-06-27 23:29:25,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 977 flow [2024-06-27 23:29:25,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 863 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:29:25,791 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 690 flow [2024-06-27 23:29:25,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-06-27 23:29:25,792 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-27 23:29:25,792 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 690 flow [2024-06-27 23:29:25,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 23:29:25,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:25,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:29:25,792 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:25,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -497160822, now seen corresponding path program 1 times [2024-06-27 23:29:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065221657] [2024-06-27 23:29:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065221657] [2024-06-27 23:29:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065221657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:26,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:26,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588497980] [2024-06-27 23:29:26,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:26,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:26,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:26,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:26,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:26,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:26,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:26,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:26,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:26,910 INFO L124 PetriNetUnfolderBase]: 221/399 cut-off events. [2024-06-27 23:29:26,911 INFO L125 PetriNetUnfolderBase]: For 7050/7050 co-relation queries the response was YES. [2024-06-27 23:29:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 399 events. 221/399 cut-off events. For 7050/7050 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1449 event pairs, 45 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2223. Up to 336 conditions per place. [2024-06-27 23:29:26,914 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 69 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-27 23:29:26,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 912 flow [2024-06-27 23:29:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:29:26,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:29:26,915 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 690 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:29:26,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 912 flow [2024-06-27 23:29:26,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 863 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:26,925 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 714 flow [2024-06-27 23:29:26,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-06-27 23:29:26,925 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 23:29:26,925 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 714 flow [2024-06-27 23:29:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:26,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:26,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:26,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:29:26,926 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:26,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 782561017, now seen corresponding path program 1 times [2024-06-27 23:29:26,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027997488] [2024-06-27 23:29:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:27,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:27,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027997488] [2024-06-27 23:29:27,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027997488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:27,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:27,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:27,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211570315] [2024-06-27 23:29:27,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:27,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:27,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:27,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:27,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:27,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:27,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 714 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:27,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:27,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:27,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:28,059 INFO L124 PetriNetUnfolderBase]: 227/409 cut-off events. [2024-06-27 23:29:28,059 INFO L125 PetriNetUnfolderBase]: For 7890/7890 co-relation queries the response was YES. [2024-06-27 23:29:28,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 409 events. 227/409 cut-off events. For 7890/7890 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1516 event pairs, 44 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 2310. Up to 345 conditions per place. [2024-06-27 23:29:28,062 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 71 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-27 23:29:28,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 956 flow [2024-06-27 23:29:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:29:28,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:29:28,063 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 714 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:29:28,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 956 flow [2024-06-27 23:29:28,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 913 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:28,073 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 742 flow [2024-06-27 23:29:28,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-27 23:29:28,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-27 23:29:28,073 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 742 flow [2024-06-27 23:29:28,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:28,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:28,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:28,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:29:28,074 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:28,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash -493438032, now seen corresponding path program 2 times [2024-06-27 23:29:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177504262] [2024-06-27 23:29:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:28,938 INFO 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 23:29:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177504262] [2024-06-27 23:29:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177504262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478767012] [2024-06-27 23:29:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:28,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:28,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:28,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:28,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:28,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:28,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:28,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:29,241 INFO L124 PetriNetUnfolderBase]: 225/406 cut-off events. [2024-06-27 23:29:29,241 INFO L125 PetriNetUnfolderBase]: For 8228/8228 co-relation queries the response was YES. [2024-06-27 23:29:29,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 406 events. 225/406 cut-off events. For 8228/8228 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1494 event pairs, 44 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 2343. Up to 334 conditions per place. [2024-06-27 23:29:29,244 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-27 23:29:29,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 944 flow [2024-06-27 23:29:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:29:29,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:29,245 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 742 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:29:29,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 944 flow [2024-06-27 23:29:29,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 885 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:29,257 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 741 flow [2024-06-27 23:29:29,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-27 23:29:29,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-27 23:29:29,260 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 741 flow [2024-06-27 23:29:29,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:29,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:29,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:29,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:29:29,260 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -493437877, now seen corresponding path program 2 times [2024-06-27 23:29:29,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:29,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036464535] [2024-06-27 23:29:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:30,164 INFO 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 23:29:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036464535] [2024-06-27 23:29:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036464535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:30,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975755076] [2024-06-27 23:29:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:30,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:30,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:30,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 741 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:30,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:30,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:30,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:30,460 INFO L124 PetriNetUnfolderBase]: 234/421 cut-off events. [2024-06-27 23:29:30,460 INFO L125 PetriNetUnfolderBase]: For 9184/9184 co-relation queries the response was YES. [2024-06-27 23:29:30,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 421 events. 234/421 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1567 event pairs, 44 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 2439. Up to 348 conditions per place. [2024-06-27 23:29:30,464 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 70 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2024-06-27 23:29:30,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 1007 flow [2024-06-27 23:29:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 23:29:30,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-27 23:29:30,466 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 741 flow. Second operand 8 states and 91 transitions. [2024-06-27 23:29:30,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 1007 flow [2024-06-27 23:29:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 945 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:30,479 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 793 flow [2024-06-27 23:29:30,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2024-06-27 23:29:30,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 23:29:30,480 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 793 flow [2024-06-27 23:29:30,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:30,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:30,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:30,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:29:30,481 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:30,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -493432297, now seen corresponding path program 3 times [2024-06-27 23:29:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:30,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816788986] [2024-06-27 23:29:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:30,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:31,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816788986] [2024-06-27 23:29:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816788986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:31,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:31,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041820799] [2024-06-27 23:29:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:31,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:31,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:31,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:31,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:31,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:31,746 INFO L124 PetriNetUnfolderBase]: 242/433 cut-off events. [2024-06-27 23:29:31,746 INFO L125 PetriNetUnfolderBase]: For 10015/10015 co-relation queries the response was YES. [2024-06-27 23:29:31,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 433 events. 242/433 cut-off events. For 10015/10015 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1614 event pairs, 41 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2610. Up to 399 conditions per place. [2024-06-27 23:29:31,750 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 19 changer transitions 0/104 dead transitions. [2024-06-27 23:29:31,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 1115 flow [2024-06-27 23:29:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:29:31,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:29:31,752 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 793 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:29:31,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 1115 flow [2024-06-27 23:29:31,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 104 transitions, 1057 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:31,766 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 838 flow [2024-06-27 23:29:31,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-06-27 23:29:31,767 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-27 23:29:31,767 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 838 flow [2024-06-27 23:29:31,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:31,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:31,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:29:31,768 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:31,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash -493432080, now seen corresponding path program 1 times [2024-06-27 23:29:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051015976] [2024-06-27 23:29:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:31,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:32,800 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 23:29:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:32,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051015976] [2024-06-27 23:29:32,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051015976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:32,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:32,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:32,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956326258] [2024-06-27 23:29:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:32,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:32,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:32,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:32,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:32,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 838 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:32,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:32,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:32,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:33,110 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-27 23:29:33,110 INFO L125 PetriNetUnfolderBase]: For 11201/11201 co-relation queries the response was YES. [2024-06-27 23:29:33,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 444 events. 248/444 cut-off events. For 11201/11201 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1662 event pairs, 42 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2714. Up to 402 conditions per place. [2024-06-27 23:29:33,119 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 86 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-06-27 23:29:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 107 transitions, 1088 flow [2024-06-27 23:29:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-27 23:29:33,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:29:33,120 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 838 flow. Second operand 7 states and 84 transitions. [2024-06-27 23:29:33,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 107 transitions, 1088 flow [2024-06-27 23:29:33,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 1046 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:33,136 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 860 flow [2024-06-27 23:29:33,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2024-06-27 23:29:33,137 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-27 23:29:33,137 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 860 flow [2024-06-27 23:29:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:33,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:33,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:29:33,138 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:33,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:33,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1486514426, now seen corresponding path program 2 times [2024-06-27 23:29:33,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:33,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082948294] [2024-06-27 23:29:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:34,197 INFO 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 23:29:34,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:34,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082948294] [2024-06-27 23:29:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082948294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:34,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281594673] [2024-06-27 23:29:34,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:34,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:34,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:34,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:34,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:34,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:34,573 INFO L124 PetriNetUnfolderBase]: 254/454 cut-off events. [2024-06-27 23:29:34,574 INFO L125 PetriNetUnfolderBase]: For 12120/12120 co-relation queries the response was YES. [2024-06-27 23:29:34,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 454 events. 254/454 cut-off events. For 12120/12120 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1708 event pairs, 46 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2835. Up to 423 conditions per place. [2024-06-27 23:29:34,581 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 92 selfloop transitions, 14 changer transitions 0/108 dead transitions. [2024-06-27 23:29:34,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 108 transitions, 1112 flow [2024-06-27 23:29:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 23:29:34,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 23:29:34,583 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 860 flow. Second operand 8 states and 81 transitions. [2024-06-27 23:29:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 108 transitions, 1112 flow [2024-06-27 23:29:34,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 1066 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:34,601 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 871 flow [2024-06-27 23:29:34,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=871, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2024-06-27 23:29:34,603 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-27 23:29:34,603 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 871 flow [2024-06-27 23:29:34,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:34,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:34,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:34,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:29:34,604 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:34,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1493931176, now seen corresponding path program 3 times [2024-06-27 23:29:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:34,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465990792] [2024-06-27 23:29:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:34,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:35,768 INFO 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 23:29:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465990792] [2024-06-27 23:29:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465990792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:35,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:35,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:35,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219191645] [2024-06-27 23:29:35,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:35,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:35,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:35,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 871 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:35,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:35,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:35,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:35,977 INFO L124 PetriNetUnfolderBase]: 257/459 cut-off events. [2024-06-27 23:29:35,977 INFO L125 PetriNetUnfolderBase]: For 12661/12661 co-relation queries the response was YES. [2024-06-27 23:29:35,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 459 events. 257/459 cut-off events. For 12661/12661 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1739 event pairs, 41 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2892. Up to 392 conditions per place. [2024-06-27 23:29:35,984 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 84 selfloop transitions, 28 changer transitions 0/115 dead transitions. [2024-06-27 23:29:36,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 115 transitions, 1233 flow [2024-06-27 23:29:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:29:36,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-27 23:29:36,001 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 871 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:29:36,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 115 transitions, 1233 flow [2024-06-27 23:29:36,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 1178 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:36,029 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 971 flow [2024-06-27 23:29:36,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=971, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2024-06-27 23:29:36,034 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-27 23:29:36,034 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 971 flow [2024-06-27 23:29:36,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:36,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:36,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:36,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:29:36,035 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:36,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1494133203, now seen corresponding path program 4 times [2024-06-27 23:29:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376139233] [2024-06-27 23:29:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:36,986 INFO 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 23:29:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376139233] [2024-06-27 23:29:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376139233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447348018] [2024-06-27 23:29:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:36,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:37,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:37,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 971 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:37,183 INFO L124 PetriNetUnfolderBase]: 265/472 cut-off events. [2024-06-27 23:29:37,183 INFO L125 PetriNetUnfolderBase]: For 13966/13966 co-relation queries the response was YES. [2024-06-27 23:29:37,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 472 events. 265/472 cut-off events. For 13966/13966 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1802 event pairs, 42 based on Foata normal form. 1/472 useless extension candidates. Maximal degree in co-relation 3107. Up to 428 conditions per place. [2024-06-27 23:29:37,186 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 93 selfloop transitions, 24 changer transitions 0/119 dead transitions. [2024-06-27 23:29:37,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 119 transitions, 1335 flow [2024-06-27 23:29:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:29:37,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:29:37,200 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 971 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:29:37,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 119 transitions, 1335 flow [2024-06-27 23:29:37,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1302 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:37,219 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 1059 flow [2024-06-27 23:29:37,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-27 23:29:37,221 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-27 23:29:37,221 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 1059 flow [2024-06-27 23:29:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:37,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:37,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:37,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:29:37,222 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:37,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1494138783, now seen corresponding path program 5 times [2024-06-27 23:29:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:37,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308573224] [2024-06-27 23:29:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:38,230 INFO 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 23:29:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308573224] [2024-06-27 23:29:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308573224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477122982] [2024-06-27 23:29:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:38,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:38,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:38,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 1059 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:38,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:38,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:38,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:38,540 INFO L124 PetriNetUnfolderBase]: 273/486 cut-off events. [2024-06-27 23:29:38,540 INFO L125 PetriNetUnfolderBase]: For 15633/15633 co-relation queries the response was YES. [2024-06-27 23:29:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 486 events. 273/486 cut-off events. For 15633/15633 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1874 event pairs, 49 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 3335. Up to 390 conditions per place. [2024-06-27 23:29:38,545 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 80 selfloop transitions, 41 changer transitions 0/123 dead transitions. [2024-06-27 23:29:38,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 123 transitions, 1433 flow [2024-06-27 23:29:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:29:38,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:29:38,547 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 1059 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:29:38,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 123 transitions, 1433 flow [2024-06-27 23:29:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 123 transitions, 1376 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:38,567 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 1179 flow [2024-06-27 23:29:38,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1179, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2024-06-27 23:29:38,568 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-27 23:29:38,568 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 1179 flow [2024-06-27 23:29:38,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:38,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:38,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:38,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:29:38,569 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:38,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1494132986, now seen corresponding path program 4 times [2024-06-27 23:29:38,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:38,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327870250] [2024-06-27 23:29:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:38,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:39,726 INFO 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 23:29:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327870250] [2024-06-27 23:29:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327870250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:39,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:39,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379208179] [2024-06-27 23:29:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:39,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:39,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:39,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:39,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:39,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 1179 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:39,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:39,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:39,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:39,943 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-27 23:29:39,943 INFO L125 PetriNetUnfolderBase]: For 16448/16448 co-relation queries the response was YES. [2024-06-27 23:29:39,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 482 events. 271/482 cut-off events. For 16448/16448 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1864 event pairs, 41 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 3433. Up to 442 conditions per place. [2024-06-27 23:29:39,946 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 101 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2024-06-27 23:29:39,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 123 transitions, 1440 flow [2024-06-27 23:29:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:29:39,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-27 23:29:39,947 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 1179 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:29:39,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 123 transitions, 1440 flow [2024-06-27 23:29:39,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 123 transitions, 1351 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:39,970 INFO L231 Difference]: Finished difference. Result has 134 places, 116 transitions, 1140 flow [2024-06-27 23:29:39,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1140, PETRI_PLACES=134, PETRI_TRANSITIONS=116} [2024-06-27 23:29:39,970 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2024-06-27 23:29:39,971 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 116 transitions, 1140 flow [2024-06-27 23:29:39,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 23:29:39,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:39,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:29:39,971 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:39,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1982389756, now seen corresponding path program 3 times [2024-06-27 23:29:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452115522] [2024-06-27 23:29:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:40,984 INFO 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 23:29:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452115522] [2024-06-27 23:29:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452115522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:40,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:40,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:40,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30620074] [2024-06-27 23:29:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:40,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:41,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:41,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 116 transitions, 1140 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:41,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:41,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:41,248 INFO L124 PetriNetUnfolderBase]: 269/480 cut-off events. [2024-06-27 23:29:41,248 INFO L125 PetriNetUnfolderBase]: For 16782/16782 co-relation queries the response was YES. [2024-06-27 23:29:41,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 480 events. 269/480 cut-off events. For 16782/16782 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1860 event pairs, 48 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 3372. Up to 370 conditions per place. [2024-06-27 23:29:41,251 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 80 selfloop transitions, 41 changer transitions 0/123 dead transitions. [2024-06-27 23:29:41,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 123 transitions, 1460 flow [2024-06-27 23:29:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:29:41,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:29:41,253 INFO L175 Difference]: Start difference. First operand has 134 places, 116 transitions, 1140 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:29:41,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 123 transitions, 1460 flow [2024-06-27 23:29:41,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 123 transitions, 1411 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:41,274 INFO L231 Difference]: Finished difference. Result has 137 places, 116 transitions, 1179 flow [2024-06-27 23:29:41,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1179, PETRI_PLACES=137, PETRI_TRANSITIONS=116} [2024-06-27 23:29:41,275 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-27 23:29:41,275 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 116 transitions, 1179 flow [2024-06-27 23:29:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:41,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:41,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:41,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:29:41,276 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:41,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 508345281, now seen corresponding path program 6 times [2024-06-27 23:29:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80704908] [2024-06-27 23:29:41,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:42,437 INFO 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 23:29:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80704908] [2024-06-27 23:29:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80704908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664056454] [2024-06-27 23:29:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:42,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:42,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 116 transitions, 1179 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:42,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:42,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:42,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:42,677 INFO L124 PetriNetUnfolderBase]: 287/508 cut-off events. [2024-06-27 23:29:42,677 INFO L125 PetriNetUnfolderBase]: For 19254/19254 co-relation queries the response was YES. [2024-06-27 23:29:42,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 508 events. 287/508 cut-off events. For 19254/19254 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 42 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 3761. Up to 429 conditions per place. [2024-06-27 23:29:42,682 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 94 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2024-06-27 23:29:42,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 132 transitions, 1709 flow [2024-06-27 23:29:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:29:42,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:42,683 INFO L175 Difference]: Start difference. First operand has 137 places, 116 transitions, 1179 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:29:42,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 132 transitions, 1709 flow [2024-06-27 23:29:42,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1629 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:42,715 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1284 flow [2024-06-27 23:29:42,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1284, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-06-27 23:29:42,716 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-27 23:29:42,716 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1284 flow [2024-06-27 23:29:42,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:42,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:42,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:29:42,717 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:42,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash -70934532, now seen corresponding path program 4 times [2024-06-27 23:29:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:42,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698516544] [2024-06-27 23:29:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:43,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:43,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698516544] [2024-06-27 23:29:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698516544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:43,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738203674] [2024-06-27 23:29:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:43,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:43,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:43,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1284 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:43,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:43,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:43,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:43,733 INFO L124 PetriNetUnfolderBase]: 297/525 cut-off events. [2024-06-27 23:29:43,733 INFO L125 PetriNetUnfolderBase]: For 21107/21107 co-relation queries the response was YES. [2024-06-27 23:29:43,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 525 events. 297/525 cut-off events. For 21107/21107 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2064 event pairs, 38 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3947. Up to 459 conditions per place. [2024-06-27 23:29:43,737 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 111 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-27 23:29:43,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 139 transitions, 1660 flow [2024-06-27 23:29:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:29:43,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:29:43,738 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1284 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:29:43,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 139 transitions, 1660 flow [2024-06-27 23:29:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 139 transitions, 1583 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:43,766 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 1348 flow [2024-06-27 23:29:43,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1348, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-06-27 23:29:43,767 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2024-06-27 23:29:43,767 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 1348 flow [2024-06-27 23:29:43,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:43,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:43,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:29:43,768 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:43,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:43,768 INFO L85 PathProgramCache]: Analyzing trace with hash -189099968, now seen corresponding path program 5 times [2024-06-27 23:29:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526720215] [2024-06-27 23:29:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:44,267 INFO 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 23:29:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526720215] [2024-06-27 23:29:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526720215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:44,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:44,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:44,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563034859] [2024-06-27 23:29:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:44,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:44,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:44,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:44,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 128 transitions, 1348 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 23:29:44,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:44,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:44,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:44,474 INFO L124 PetriNetUnfolderBase]: 290/523 cut-off events. [2024-06-27 23:29:44,475 INFO L125 PetriNetUnfolderBase]: For 21828/21835 co-relation queries the response was YES. [2024-06-27 23:29:44,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 523 events. 290/523 cut-off events. For 21828/21835 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2133 event pairs, 38 based on Foata normal form. 8/530 useless extension candidates. Maximal degree in co-relation 3905. Up to 424 conditions per place. [2024-06-27 23:29:44,478 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 89 selfloop transitions, 33 changer transitions 0/141 dead transitions. [2024-06-27 23:29:44,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1670 flow [2024-06-27 23:29:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 23:29:44,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-27 23:29:44,481 INFO L175 Difference]: Start difference. First operand has 144 places, 128 transitions, 1348 flow. Second operand 7 states and 83 transitions. [2024-06-27 23:29:44,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1670 flow [2024-06-27 23:29:44,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 141 transitions, 1611 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:44,515 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 1428 flow [2024-06-27 23:29:44,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1428, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2024-06-27 23:29:44,516 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 23:29:44,516 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 1428 flow [2024-06-27 23:29:44,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 23:29:44,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:44,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:29:44,517 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:44,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -186126738, now seen corresponding path program 6 times [2024-06-27 23:29:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418625754] [2024-06-27 23:29:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:45,258 INFO 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 23:29:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:45,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418625754] [2024-06-27 23:29:45,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418625754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:45,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:45,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:45,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707382052] [2024-06-27 23:29:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:45,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:45,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 1428 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:45,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:45,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:45,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:45,579 INFO L124 PetriNetUnfolderBase]: 305/539 cut-off events. [2024-06-27 23:29:45,580 INFO L125 PetriNetUnfolderBase]: For 22921/22921 co-relation queries the response was YES. [2024-06-27 23:29:45,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 539 events. 305/539 cut-off events. For 22921/22921 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2146 event pairs, 40 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 4051. Up to 471 conditions per place. [2024-06-27 23:29:45,583 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 114 selfloop transitions, 32 changer transitions 0/148 dead transitions. [2024-06-27 23:29:45,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 148 transitions, 1788 flow [2024-06-27 23:29:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:29:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:29:45,588 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 1428 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:29:45,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 148 transitions, 1788 flow [2024-06-27 23:29:45,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1746 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:45,623 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 1493 flow [2024-06-27 23:29:45,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1493, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2024-06-27 23:29:45,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-27 23:29:45,623 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 1493 flow [2024-06-27 23:29:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:45,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:45,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:45,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:29:45,624 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:45,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 121764797, now seen corresponding path program 7 times [2024-06-27 23:29:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654200708] [2024-06-27 23:29:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:46,505 INFO 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 23:29:46,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654200708] [2024-06-27 23:29:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654200708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:46,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:46,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:46,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235346698] [2024-06-27 23:29:46,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:46,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:46,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:46,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:46,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:46,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 1493 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:46,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:46,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:46,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:46,820 INFO L124 PetriNetUnfolderBase]: 308/545 cut-off events. [2024-06-27 23:29:46,820 INFO L125 PetriNetUnfolderBase]: For 22591/22591 co-relation queries the response was YES. [2024-06-27 23:29:46,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 545 events. 308/545 cut-off events. For 22591/22591 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2195 event pairs, 40 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 4123. Up to 479 conditions per place. [2024-06-27 23:29:46,853 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-06-27 23:29:46,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 149 transitions, 1859 flow [2024-06-27 23:29:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:29:46,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:29:46,854 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 1493 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:29:46,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 149 transitions, 1859 flow [2024-06-27 23:29:46,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 149 transitions, 1772 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:46,896 INFO L231 Difference]: Finished difference. Result has 155 places, 136 transitions, 1515 flow [2024-06-27 23:29:46,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=155, PETRI_TRANSITIONS=136} [2024-06-27 23:29:46,897 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 23:29:46,897 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 136 transitions, 1515 flow [2024-06-27 23:29:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:46,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:46,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:46,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:29:46,898 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:46,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1713294437, now seen corresponding path program 8 times [2024-06-27 23:29:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256157754] [2024-06-27 23:29:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:47,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256157754] [2024-06-27 23:29:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256157754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:47,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637013465] [2024-06-27 23:29:47,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:47,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:47,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:47,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 136 transitions, 1515 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:47,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:47,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:47,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:48,187 INFO L124 PetriNetUnfolderBase]: 311/549 cut-off events. [2024-06-27 23:29:48,187 INFO L125 PetriNetUnfolderBase]: For 23852/23852 co-relation queries the response was YES. [2024-06-27 23:29:48,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 549 events. 311/549 cut-off events. For 23852/23852 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2187 event pairs, 42 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 4213. Up to 484 conditions per place. [2024-06-27 23:29:48,191 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 120 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-27 23:29:48,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 150 transitions, 1885 flow [2024-06-27 23:29:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:29:48,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:29:48,192 INFO L175 Difference]: Start difference. First operand has 155 places, 136 transitions, 1515 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:29:48,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 150 transitions, 1885 flow [2024-06-27 23:29:48,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 150 transitions, 1792 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:48,232 INFO L231 Difference]: Finished difference. Result has 157 places, 138 transitions, 1529 flow [2024-06-27 23:29:48,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=157, PETRI_TRANSITIONS=138} [2024-06-27 23:29:48,233 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-27 23:29:48,233 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 138 transitions, 1529 flow [2024-06-27 23:29:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:48,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:48,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:29:48,233 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:48,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1709575367, now seen corresponding path program 9 times [2024-06-27 23:29:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821975361] [2024-06-27 23:29:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:49,079 INFO 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 23:29:49,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821975361] [2024-06-27 23:29:49,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821975361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:49,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290090782] [2024-06-27 23:29:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:49,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:49,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:49,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:49,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:49,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 138 transitions, 1529 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:49,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:49,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:49,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:49,401 INFO L124 PetriNetUnfolderBase]: 312/552 cut-off events. [2024-06-27 23:29:49,401 INFO L125 PetriNetUnfolderBase]: For 25018/25018 co-relation queries the response was YES. [2024-06-27 23:29:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 552 events. 312/552 cut-off events. For 25018/25018 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2210 event pairs, 44 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 4216. Up to 465 conditions per place. [2024-06-27 23:29:49,405 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 38 changer transitions 0/152 dead transitions. [2024-06-27 23:29:49,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 1915 flow [2024-06-27 23:29:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:29:49,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:29:49,415 INFO L175 Difference]: Start difference. First operand has 157 places, 138 transitions, 1529 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:29:49,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 1915 flow [2024-06-27 23:29:49,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 152 transitions, 1824 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:49,461 INFO L231 Difference]: Finished difference. Result has 159 places, 140 transitions, 1555 flow [2024-06-27 23:29:49,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=159, PETRI_TRANSITIONS=140} [2024-06-27 23:29:49,463 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 23:29:49,463 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 140 transitions, 1555 flow [2024-06-27 23:29:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:49,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:29:49,464 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1709575522, now seen corresponding path program 7 times [2024-06-27 23:29:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:49,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763427563] [2024-06-27 23:29:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763427563] [2024-06-27 23:29:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763427563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:50,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:50,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:50,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127455272] [2024-06-27 23:29:50,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:50,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:50,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:50,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 140 transitions, 1555 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:50,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:50,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:50,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:50,495 INFO L124 PetriNetUnfolderBase]: 310/549 cut-off events. [2024-06-27 23:29:50,495 INFO L125 PetriNetUnfolderBase]: For 25038/25038 co-relation queries the response was YES. [2024-06-27 23:29:50,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 549 events. 310/549 cut-off events. For 25038/25038 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2209 event pairs, 44 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 4203. Up to 459 conditions per place. [2024-06-27 23:29:50,499 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 109 selfloop transitions, 39 changer transitions 0/150 dead transitions. [2024-06-27 23:29:50,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 150 transitions, 1877 flow [2024-06-27 23:29:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:29:50,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:29:50,500 INFO L175 Difference]: Start difference. First operand has 159 places, 140 transitions, 1555 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:29:50,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 150 transitions, 1877 flow [2024-06-27 23:29:50,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 150 transitions, 1760 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:50,544 INFO L231 Difference]: Finished difference. Result has 160 places, 140 transitions, 1522 flow [2024-06-27 23:29:50,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1522, PETRI_PLACES=160, PETRI_TRANSITIONS=140} [2024-06-27 23:29:50,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-27 23:29:50,545 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 140 transitions, 1522 flow [2024-06-27 23:29:50,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:50,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:50,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:29:50,546 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:50,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:50,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1709569787, now seen corresponding path program 10 times [2024-06-27 23:29:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:50,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692596671] [2024-06-27 23:29:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:51,510 INFO 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 23:29:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:51,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692596671] [2024-06-27 23:29:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692596671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:51,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:51,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290030199] [2024-06-27 23:29:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:51,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:51,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:51,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:51,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 140 transitions, 1522 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:51,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:51,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:51,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:51,796 INFO L124 PetriNetUnfolderBase]: 308/545 cut-off events. [2024-06-27 23:29:51,796 INFO L125 PetriNetUnfolderBase]: For 25292/25292 co-relation queries the response was YES. [2024-06-27 23:29:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 545 events. 308/545 cut-off events. For 25292/25292 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2198 event pairs, 44 based on Foata normal form. 1/545 useless extension candidates. Maximal degree in co-relation 4125. Up to 510 conditions per place. [2024-06-27 23:29:51,801 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 133 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-06-27 23:29:51,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1980 flow [2024-06-27 23:29:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:51,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-27 23:29:51,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2024-06-27 23:29:51,824 INFO L175 Difference]: Start difference. First operand has 160 places, 140 transitions, 1522 flow. Second operand 9 states and 92 transitions. [2024-06-27 23:29:51,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1980 flow [2024-06-27 23:29:51,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 154 transitions, 1892 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:51,872 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 1525 flow [2024-06-27 23:29:51,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2024-06-27 23:29:51,873 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 23:29:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 1525 flow [2024-06-27 23:29:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:51,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:51,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:29:51,874 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:51,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1486504506, now seen corresponding path program 1 times [2024-06-27 23:29:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:51,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458395713] [2024-06-27 23:29:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:53,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458395713] [2024-06-27 23:29:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458395713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:53,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:53,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:53,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373659716] [2024-06-27 23:29:53,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:53,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:53,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:53,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:53,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:53,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:53,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 142 transitions, 1525 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:53,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:53,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:53,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:53,935 INFO L124 PetriNetUnfolderBase]: 305/540 cut-off events. [2024-06-27 23:29:53,936 INFO L125 PetriNetUnfolderBase]: For 25792/25792 co-relation queries the response was YES. [2024-06-27 23:29:53,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 540 events. 305/540 cut-off events. For 25792/25792 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2162 event pairs, 59 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 4029. Up to 511 conditions per place. [2024-06-27 23:29:53,940 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 135 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2024-06-27 23:29:53,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 1852 flow [2024-06-27 23:29:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-27 23:29:53,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-27 23:29:53,941 INFO L175 Difference]: Start difference. First operand has 163 places, 142 transitions, 1525 flow. Second operand 9 states and 86 transitions. [2024-06-27 23:29:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 1852 flow [2024-06-27 23:29:53,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 152 transitions, 1720 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 23:29:53,990 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1439 flow [2024-06-27 23:29:53,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=162, PETRI_TRANSITIONS=143} [2024-06-27 23:29:53,990 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 23:29:53,990 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1439 flow [2024-06-27 23:29:53,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:53,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:53,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:29:53,991 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:53,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1510534356, now seen corresponding path program 1 times [2024-06-27 23:29:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394999768] [2024-06-27 23:29:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:54,849 INFO 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 23:29:54,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:54,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394999768] [2024-06-27 23:29:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394999768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:54,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101276755] [2024-06-27 23:29:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:54,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:54,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 143 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:54,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:54,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:54,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:55,202 INFO L124 PetriNetUnfolderBase]: 314/559 cut-off events. [2024-06-27 23:29:55,202 INFO L125 PetriNetUnfolderBase]: For 26922/26922 co-relation queries the response was YES. [2024-06-27 23:29:55,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 559 events. 314/559 cut-off events. For 26922/26922 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2312 event pairs, 40 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3995. Up to 482 conditions per place. [2024-06-27 23:29:55,206 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 130 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2024-06-27 23:29:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 157 transitions, 1797 flow [2024-06-27 23:29:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:29:55,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:29:55,207 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1439 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:29:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 157 transitions, 1797 flow [2024-06-27 23:29:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 157 transitions, 1759 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:55,263 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1477 flow [2024-06-27 23:29:55,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1477, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-27 23:29:55,263 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-27 23:29:55,263 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1477 flow [2024-06-27 23:29:55,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:55,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:55,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:55,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:29:55,264 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:55,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212756, now seen corresponding path program 2 times [2024-06-27 23:29:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318770054] [2024-06-27 23:29:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:55,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318770054] [2024-06-27 23:29:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318770054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857817973] [2024-06-27 23:29:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:56,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:56,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1477 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:56,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:56,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:56,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:56,576 INFO L124 PetriNetUnfolderBase]: 318/567 cut-off events. [2024-06-27 23:29:56,577 INFO L125 PetriNetUnfolderBase]: For 28204/28204 co-relation queries the response was YES. [2024-06-27 23:29:56,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 567 events. 318/567 cut-off events. For 28204/28204 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2363 event pairs, 44 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 4089. Up to 491 conditions per place. [2024-06-27 23:29:56,581 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 29 changer transitions 0/156 dead transitions. [2024-06-27 23:29:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 156 transitions, 1825 flow [2024-06-27 23:29:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:29:56,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 23:29:56,582 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1477 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:29:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 156 transitions, 1825 flow [2024-06-27 23:29:56,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 156 transitions, 1769 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:56,639 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1500 flow [2024-06-27 23:29:56,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1500, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-06-27 23:29:56,640 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 23:29:56,640 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1500 flow [2024-06-27 23:29:56,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:56,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:56,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:56,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:29:56,640 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:56,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1513212632, now seen corresponding path program 1 times [2024-06-27 23:29:56,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344357326] [2024-06-27 23:29:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:57,891 INFO 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 23:29:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344357326] [2024-06-27 23:29:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344357326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730571712] [2024-06-27 23:29:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:57,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:57,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:29:57,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1500 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:57,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:57,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:29:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:58,241 INFO L124 PetriNetUnfolderBase]: 321/572 cut-off events. [2024-06-27 23:29:58,241 INFO L125 PetriNetUnfolderBase]: For 28877/28877 co-relation queries the response was YES. [2024-06-27 23:29:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 572 events. 321/572 cut-off events. For 28877/28877 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2390 event pairs, 43 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 4162. Up to 493 conditions per place. [2024-06-27 23:29:58,245 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 124 selfloop transitions, 32 changer transitions 0/158 dead transitions. [2024-06-27 23:29:58,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 158 transitions, 1900 flow [2024-06-27 23:29:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:29:58,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:29:58,247 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1500 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:29:58,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 158 transitions, 1900 flow [2024-06-27 23:29:58,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 158 transitions, 1833 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:58,310 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1546 flow [2024-06-27 23:29:58,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1546, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-27 23:29:58,310 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-27 23:29:58,310 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1546 flow [2024-06-27 23:29:58,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:29:58,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:58,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:58,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:29:58,311 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:58,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1510411286, now seen corresponding path program 1 times [2024-06-27 23:29:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941843891] [2024-06-27 23:29:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:59,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:59,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941843891] [2024-06-27 23:29:59,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941843891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:59,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:59,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:59,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093304591] [2024-06-27 23:29:59,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:59,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:59,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:59,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:59,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:59,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:59,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1546 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:29:59,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:59,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:59,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:59,606 INFO L124 PetriNetUnfolderBase]: 340/605 cut-off events. [2024-06-27 23:29:59,607 INFO L125 PetriNetUnfolderBase]: For 34601/34601 co-relation queries the response was YES. [2024-06-27 23:29:59,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 605 events. 340/605 cut-off events. For 34601/34601 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2559 event pairs, 35 based on Foata normal form. 4/608 useless extension candidates. Maximal degree in co-relation 4487. Up to 494 conditions per place. [2024-06-27 23:29:59,611 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 127 selfloop transitions, 39 changer transitions 0/168 dead transitions. [2024-06-27 23:29:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 168 transitions, 2122 flow [2024-06-27 23:29:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:29:59,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:29:59,629 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1546 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:29:59,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 168 transitions, 2122 flow [2024-06-27 23:29:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 168 transitions, 2043 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:59,691 INFO L231 Difference]: Finished difference. Result has 173 places, 152 transitions, 1632 flow [2024-06-27 23:29:59,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1632, PETRI_PLACES=173, PETRI_TRANSITIONS=152} [2024-06-27 23:29:59,691 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 23:29:59,691 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 152 transitions, 1632 flow [2024-06-27 23:29:59,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:29:59,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:59,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:59,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:29:59,692 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:59,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1394947136, now seen corresponding path program 2 times [2024-06-27 23:29:59,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:59,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432168646] [2024-06-27 23:29:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:59,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:00,633 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 23:30:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432168646] [2024-06-27 23:30:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432168646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:00,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922862555] [2024-06-27 23:30:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:00,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 152 transitions, 1632 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:00,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:00,898 INFO L124 PetriNetUnfolderBase]: 377/666 cut-off events. [2024-06-27 23:30:00,898 INFO L125 PetriNetUnfolderBase]: For 39977/39977 co-relation queries the response was YES. [2024-06-27 23:30:00,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 666 events. 377/666 cut-off events. For 39977/39977 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2876 event pairs, 49 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 5288. Up to 558 conditions per place. [2024-06-27 23:30:00,904 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 31 changer transitions 0/174 dead transitions. [2024-06-27 23:30:00,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 174 transitions, 2348 flow [2024-06-27 23:30:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-27 23:30:00,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-27 23:30:00,905 INFO L175 Difference]: Start difference. First operand has 173 places, 152 transitions, 1632 flow. Second operand 8 states and 109 transitions. [2024-06-27 23:30:00,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 174 transitions, 2348 flow [2024-06-27 23:30:00,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 174 transitions, 2277 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:00,985 INFO L231 Difference]: Finished difference. Result has 177 places, 159 transitions, 1719 flow [2024-06-27 23:30:00,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1719, PETRI_PLACES=177, PETRI_TRANSITIONS=159} [2024-06-27 23:30:00,985 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-27 23:30:00,986 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 159 transitions, 1719 flow [2024-06-27 23:30:00,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:00,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:00,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:00,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:30:00,986 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:00,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1394947322, now seen corresponding path program 2 times [2024-06-27 23:30:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470058838] [2024-06-27 23:30:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:02,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470058838] [2024-06-27 23:30:02,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470058838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:02,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:02,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587620347] [2024-06-27 23:30:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:02,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:02,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:02,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:02,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:02,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 159 transitions, 1719 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:02,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:02,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:02,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:02,637 INFO L124 PetriNetUnfolderBase]: 375/661 cut-off events. [2024-06-27 23:30:02,637 INFO L125 PetriNetUnfolderBase]: For 39929/39929 co-relation queries the response was YES. [2024-06-27 23:30:02,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5381 conditions, 661 events. 375/661 cut-off events. For 39929/39929 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2846 event pairs, 50 based on Foata normal form. 1/661 useless extension candidates. Maximal degree in co-relation 5301. Up to 627 conditions per place. [2024-06-27 23:30:02,642 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 147 selfloop transitions, 18 changer transitions 0/167 dead transitions. [2024-06-27 23:30:02,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 167 transitions, 2069 flow [2024-06-27 23:30:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 23:30:02,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-27 23:30:02,644 INFO L175 Difference]: Start difference. First operand has 177 places, 159 transitions, 1719 flow. Second operand 8 states and 83 transitions. [2024-06-27 23:30:02,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 167 transitions, 2069 flow [2024-06-27 23:30:02,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 167 transitions, 2008 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:02,731 INFO L231 Difference]: Finished difference. Result has 182 places, 159 transitions, 1700 flow [2024-06-27 23:30:02,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1700, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2024-06-27 23:30:02,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-27 23:30:02,732 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 1700 flow [2024-06-27 23:30:02,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:02,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:02,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:02,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:30:02,733 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:02,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1394940626, now seen corresponding path program 3 times [2024-06-27 23:30:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:02,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937254043] [2024-06-27 23:30:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:03,794 INFO 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 23:30:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:03,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937254043] [2024-06-27 23:30:03,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937254043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:03,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220474594] [2024-06-27 23:30:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:03,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:03,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 1700 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:03,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:03,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:03,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:04,064 INFO L124 PetriNetUnfolderBase]: 367/651 cut-off events. [2024-06-27 23:30:04,064 INFO L125 PetriNetUnfolderBase]: For 39679/39679 co-relation queries the response was YES. [2024-06-27 23:30:04,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 651 events. 367/651 cut-off events. For 39679/39679 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2816 event pairs, 50 based on Foata normal form. 4/654 useless extension candidates. Maximal degree in co-relation 5033. Up to 553 conditions per place. [2024-06-27 23:30:04,070 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 30 changer transitions 0/173 dead transitions. [2024-06-27 23:30:04,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 173 transitions, 2312 flow [2024-06-27 23:30:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:30:04,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:30:04,072 INFO L175 Difference]: Start difference. First operand has 182 places, 159 transitions, 1700 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:30:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 173 transitions, 2312 flow [2024-06-27 23:30:04,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 2278 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:04,160 INFO L231 Difference]: Finished difference. Result has 184 places, 159 transitions, 1733 flow [2024-06-27 23:30:04,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1733, PETRI_PLACES=184, PETRI_TRANSITIONS=159} [2024-06-27 23:30:04,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:30:04,161 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 159 transitions, 1733 flow [2024-06-27 23:30:04,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:04,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:04,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:04,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:30:04,162 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:04,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:04,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1883291000, now seen corresponding path program 3 times [2024-06-27 23:30:04,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:04,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687903695] [2024-06-27 23:30:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687903695] [2024-06-27 23:30:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687903695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111126620] [2024-06-27 23:30:05,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:05,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:05,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 159 transitions, 1733 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:05,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:05,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:05,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:05,706 INFO L124 PetriNetUnfolderBase]: 371/657 cut-off events. [2024-06-27 23:30:05,706 INFO L125 PetriNetUnfolderBase]: For 40532/40532 co-relation queries the response was YES. [2024-06-27 23:30:05,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5242 conditions, 657 events. 371/657 cut-off events. For 40532/40532 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2844 event pairs, 49 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 5159. Up to 574 conditions per place. [2024-06-27 23:30:05,713 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 134 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-06-27 23:30:05,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 169 transitions, 2105 flow [2024-06-27 23:30:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:30:05,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:30:05,716 INFO L175 Difference]: Start difference. First operand has 184 places, 159 transitions, 1733 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:30:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 169 transitions, 2105 flow [2024-06-27 23:30:05,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 169 transitions, 2041 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:30:05,809 INFO L231 Difference]: Finished difference. Result has 188 places, 160 transitions, 1757 flow [2024-06-27 23:30:05,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1757, PETRI_PLACES=188, PETRI_TRANSITIONS=160} [2024-06-27 23:30:05,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 23:30:05,810 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 160 transitions, 1757 flow [2024-06-27 23:30:05,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:05,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:05,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:30:05,811 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:05,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1883291124, now seen corresponding path program 3 times [2024-06-27 23:30:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:05,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743850080] [2024-06-27 23:30:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:05,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:06,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743850080] [2024-06-27 23:30:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743850080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:06,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:06,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:06,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697669447] [2024-06-27 23:30:06,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:06,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:06,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:06,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:06,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:07,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:07,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 160 transitions, 1757 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:07,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:07,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:07,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:07,292 INFO L124 PetriNetUnfolderBase]: 374/662 cut-off events. [2024-06-27 23:30:07,292 INFO L125 PetriNetUnfolderBase]: For 41023/41023 co-relation queries the response was YES. [2024-06-27 23:30:07,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5304 conditions, 662 events. 374/662 cut-off events. For 41023/41023 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2867 event pairs, 49 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 5219. Up to 576 conditions per place. [2024-06-27 23:30:07,297 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 36 changer transitions 0/171 dead transitions. [2024-06-27 23:30:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 171 transitions, 2189 flow [2024-06-27 23:30:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 23:30:07,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:30:07,299 INFO L175 Difference]: Start difference. First operand has 188 places, 160 transitions, 1757 flow. Second operand 8 states and 92 transitions. [2024-06-27 23:30:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 171 transitions, 2189 flow [2024-06-27 23:30:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 171 transitions, 2111 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:07,383 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1809 flow [2024-06-27 23:30:07,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1809, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-27 23:30:07,384 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:30:07,384 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1809 flow [2024-06-27 23:30:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:07,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:07,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:30:07,385 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:07,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -957049248, now seen corresponding path program 4 times [2024-06-27 23:30:07,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:07,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242293370] [2024-06-27 23:30:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:08,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242293370] [2024-06-27 23:30:08,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242293370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:08,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:08,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171731224] [2024-06-27 23:30:08,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:08,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:08,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:08,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:08,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:08,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1809 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:08,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:08,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:08,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:08,667 INFO L124 PetriNetUnfolderBase]: 386/682 cut-off events. [2024-06-27 23:30:08,667 INFO L125 PetriNetUnfolderBase]: For 46731/46731 co-relation queries the response was YES. [2024-06-27 23:30:08,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 682 events. 386/682 cut-off events. For 46731/46731 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2971 event pairs, 46 based on Foata normal form. 4/685 useless extension candidates. Maximal degree in co-relation 5423. Up to 543 conditions per place. [2024-06-27 23:30:08,673 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 122 selfloop transitions, 53 changer transitions 0/177 dead transitions. [2024-06-27 23:30:08,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 177 transitions, 2279 flow [2024-06-27 23:30:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:30:08,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 23:30:08,674 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1809 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:30:08,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 177 transitions, 2279 flow [2024-06-27 23:30:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 177 transitions, 2181 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:08,780 INFO L231 Difference]: Finished difference. Result has 191 places, 164 transitions, 1861 flow [2024-06-27 23:30:08,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=191, PETRI_TRANSITIONS=164} [2024-06-27 23:30:08,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:30:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 164 transitions, 1861 flow [2024-06-27 23:30:08,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:08,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:08,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:30:08,781 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:08,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1154419586, now seen corresponding path program 5 times [2024-06-27 23:30:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911602448] [2024-06-27 23:30:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:09,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:09,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911602448] [2024-06-27 23:30:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911602448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:09,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:09,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156028765] [2024-06-27 23:30:09,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:09,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:09,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:09,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 164 transitions, 1861 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:09,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:09,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:09,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:10,052 INFO L124 PetriNetUnfolderBase]: 465/810 cut-off events. [2024-06-27 23:30:10,053 INFO L125 PetriNetUnfolderBase]: For 63680/63680 co-relation queries the response was YES. [2024-06-27 23:30:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 810 events. 465/810 cut-off events. For 63680/63680 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3661 event pairs, 60 based on Foata normal form. 4/813 useless extension candidates. Maximal degree in co-relation 7210. Up to 560 conditions per place. [2024-06-27 23:30:10,060 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 147 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-27 23:30:10,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 193 transitions, 2895 flow [2024-06-27 23:30:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-27 23:30:10,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 23:30:10,061 INFO L175 Difference]: Start difference. First operand has 191 places, 164 transitions, 1861 flow. Second operand 8 states and 115 transitions. [2024-06-27 23:30:10,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 193 transitions, 2895 flow [2024-06-27 23:30:10,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 193 transitions, 2767 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:10,193 INFO L231 Difference]: Finished difference. Result has 194 places, 174 transitions, 2018 flow [2024-06-27 23:30:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2018, PETRI_PLACES=194, PETRI_TRANSITIONS=174} [2024-06-27 23:30:10,194 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:30:10,194 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 174 transitions, 2018 flow [2024-06-27 23:30:10,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:10,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:10,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:30:10,200 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:10,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:10,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1552626948, now seen corresponding path program 1 times [2024-06-27 23:30:10,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:10,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933621728] [2024-06-27 23:30:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:11,664 INFO 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 23:30:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933621728] [2024-06-27 23:30:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933621728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071251351] [2024-06-27 23:30:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:11,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:11,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:11,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 174 transitions, 2018 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:11,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:11,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:11,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:12,135 INFO L124 PetriNetUnfolderBase]: 461/804 cut-off events. [2024-06-27 23:30:12,146 INFO L125 PetriNetUnfolderBase]: For 62329/62329 co-relation queries the response was YES. [2024-06-27 23:30:12,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 804 events. 461/804 cut-off events. For 62329/62329 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3637 event pairs, 64 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 7217. Up to 719 conditions per place. [2024-06-27 23:30:12,154 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 148 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-27 23:30:12,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 186 transitions, 2563 flow [2024-06-27 23:30:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:30:12,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:30:12,156 INFO L175 Difference]: Start difference. First operand has 194 places, 174 transitions, 2018 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:30:12,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 186 transitions, 2563 flow [2024-06-27 23:30:12,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 186 transitions, 2490 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 23:30:12,261 INFO L231 Difference]: Finished difference. Result has 201 places, 177 transitions, 2098 flow [2024-06-27 23:30:12,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2098, PETRI_PLACES=201, PETRI_TRANSITIONS=177} [2024-06-27 23:30:12,262 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 23:30:12,262 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 177 transitions, 2098 flow [2024-06-27 23:30:12,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:12,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:12,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:12,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:30:12,264 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:12,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1154413076, now seen corresponding path program 6 times [2024-06-27 23:30:12,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:12,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051020892] [2024-06-27 23:30:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:12,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051020892] [2024-06-27 23:30:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051020892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:13,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:13,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696298628] [2024-06-27 23:30:13,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:13,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:13,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 177 transitions, 2098 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:13,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:13,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:13,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:13,613 INFO L124 PetriNetUnfolderBase]: 468/816 cut-off events. [2024-06-27 23:30:13,614 INFO L125 PetriNetUnfolderBase]: For 66074/66074 co-relation queries the response was YES. [2024-06-27 23:30:13,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7464 conditions, 816 events. 468/816 cut-off events. For 66074/66074 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3699 event pairs, 62 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 7374. Up to 565 conditions per place. [2024-06-27 23:30:13,621 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 143 selfloop transitions, 52 changer transitions 0/198 dead transitions. [2024-06-27 23:30:13,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 198 transitions, 3025 flow [2024-06-27 23:30:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-27 23:30:13,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 23:30:13,623 INFO L175 Difference]: Start difference. First operand has 201 places, 177 transitions, 2098 flow. Second operand 8 states and 114 transitions. [2024-06-27 23:30:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 198 transitions, 3025 flow [2024-06-27 23:30:13,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 198 transitions, 2945 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:30:13,762 INFO L231 Difference]: Finished difference. Result has 205 places, 182 transitions, 2221 flow [2024-06-27 23:30:13,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2221, PETRI_PLACES=205, PETRI_TRANSITIONS=182} [2024-06-27 23:30:13,763 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 23:30:13,763 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 182 transitions, 2221 flow [2024-06-27 23:30:13,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:13,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:13,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:13,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:30:13,764 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:13,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1154412890, now seen corresponding path program 4 times [2024-06-27 23:30:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:13,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840829308] [2024-06-27 23:30:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:13,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:14,926 INFO 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 23:30:14,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840829308] [2024-06-27 23:30:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840829308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975921915] [2024-06-27 23:30:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:14,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:14,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:14,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 182 transitions, 2221 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:14,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:14,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:14,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:15,213 INFO L124 PetriNetUnfolderBase]: 465/811 cut-off events. [2024-06-27 23:30:15,214 INFO L125 PetriNetUnfolderBase]: For 66365/66365 co-relation queries the response was YES. [2024-06-27 23:30:15,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7576 conditions, 811 events. 465/811 cut-off events. For 66365/66365 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3662 event pairs, 70 based on Foata normal form. 1/811 useless extension candidates. Maximal degree in co-relation 7483. Up to 735 conditions per place. [2024-06-27 23:30:15,222 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 152 selfloop transitions, 36 changer transitions 0/190 dead transitions. [2024-06-27 23:30:15,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 190 transitions, 2723 flow [2024-06-27 23:30:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:30:15,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:30:15,223 INFO L175 Difference]: Start difference. First operand has 205 places, 182 transitions, 2221 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:30:15,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 190 transitions, 2723 flow [2024-06-27 23:30:15,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 190 transitions, 2598 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:15,357 INFO L231 Difference]: Finished difference. Result has 209 places, 182 transitions, 2174 flow [2024-06-27 23:30:15,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2174, PETRI_PLACES=209, PETRI_TRANSITIONS=182} [2024-06-27 23:30:15,358 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-27 23:30:15,358 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 182 transitions, 2174 flow [2024-06-27 23:30:15,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:15,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:15,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:15,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:30:15,358 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:15,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash 926338946, now seen corresponding path program 7 times [2024-06-27 23:30:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583596512] [2024-06-27 23:30:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:16,179 INFO 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 23:30:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:16,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583596512] [2024-06-27 23:30:16,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583596512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:16,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:16,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:16,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966861976] [2024-06-27 23:30:16,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:16,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:16,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:16,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:16,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 182 transitions, 2174 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:16,447 INFO L124 PetriNetUnfolderBase]: 474/827 cut-off events. [2024-06-27 23:30:16,447 INFO L125 PetriNetUnfolderBase]: For 70579/70579 co-relation queries the response was YES. [2024-06-27 23:30:16,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 827 events. 474/827 cut-off events. For 70579/70579 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3751 event pairs, 76 based on Foata normal form. 4/830 useless extension candidates. Maximal degree in co-relation 7515. Up to 680 conditions per place. [2024-06-27 23:30:16,455 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 141 selfloop transitions, 53 changer transitions 0/197 dead transitions. [2024-06-27 23:30:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 197 transitions, 2828 flow [2024-06-27 23:30:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:30:16,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-27 23:30:16,456 INFO L175 Difference]: Start difference. First operand has 209 places, 182 transitions, 2174 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:30:16,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 197 transitions, 2828 flow [2024-06-27 23:30:16,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 197 transitions, 2760 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:16,592 INFO L231 Difference]: Finished difference. Result has 212 places, 186 transitions, 2325 flow [2024-06-27 23:30:16,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2325, PETRI_PLACES=212, PETRI_TRANSITIONS=186} [2024-06-27 23:30:16,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-27 23:30:16,592 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 186 transitions, 2325 flow [2024-06-27 23:30:16,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:16,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:16,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:16,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:30:16,593 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:16,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1162693796, now seen corresponding path program 8 times [2024-06-27 23:30:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:16,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275724715] [2024-06-27 23:30:16,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:16,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:18,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:18,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275724715] [2024-06-27 23:30:18,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275724715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:18,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:18,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916944344] [2024-06-27 23:30:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:18,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:18,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:18,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 186 transitions, 2325 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:18,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:18,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:18,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:18,869 INFO L124 PetriNetUnfolderBase]: 470/822 cut-off events. [2024-06-27 23:30:18,869 INFO L125 PetriNetUnfolderBase]: For 67743/67743 co-relation queries the response was YES. [2024-06-27 23:30:18,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7591 conditions, 822 events. 470/822 cut-off events. For 67743/67743 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3737 event pairs, 82 based on Foata normal form. 2/823 useless extension candidates. Maximal degree in co-relation 7495. Up to 763 conditions per place. [2024-06-27 23:30:18,876 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-27 23:30:18,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 199 transitions, 2930 flow [2024-06-27 23:30:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:30:18,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 23:30:18,877 INFO L175 Difference]: Start difference. First operand has 212 places, 186 transitions, 2325 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:30:18,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 199 transitions, 2930 flow [2024-06-27 23:30:19,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 199 transitions, 2820 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:19,010 INFO L231 Difference]: Finished difference. Result has 217 places, 189 transitions, 2323 flow [2024-06-27 23:30:19,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2323, PETRI_PLACES=217, PETRI_TRANSITIONS=189} [2024-06-27 23:30:19,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 23:30:19,011 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 189 transitions, 2323 flow [2024-06-27 23:30:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:19,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:19,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:30:19,011 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:19,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1324725550, now seen corresponding path program 9 times [2024-06-27 23:30:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203622922] [2024-06-27 23:30:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203622922] [2024-06-27 23:30:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203622922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:20,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:20,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:20,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030807194] [2024-06-27 23:30:20,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:20,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:20,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 189 transitions, 2323 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:20,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:20,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:20,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:20,536 INFO L124 PetriNetUnfolderBase]: 484/845 cut-off events. [2024-06-27 23:30:20,536 INFO L125 PetriNetUnfolderBase]: For 72560/72560 co-relation queries the response was YES. [2024-06-27 23:30:20,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7839 conditions, 845 events. 484/845 cut-off events. For 72560/72560 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3874 event pairs, 59 based on Foata normal form. 4/848 useless extension candidates. Maximal degree in co-relation 7740. Up to 750 conditions per place. [2024-06-27 23:30:20,543 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 176 selfloop transitions, 27 changer transitions 0/205 dead transitions. [2024-06-27 23:30:20,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 205 transitions, 3103 flow [2024-06-27 23:30:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:30:20,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:30:20,544 INFO L175 Difference]: Start difference. First operand has 217 places, 189 transitions, 2323 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:30:20,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 205 transitions, 3103 flow [2024-06-27 23:30:20,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 205 transitions, 3018 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:20,669 INFO L231 Difference]: Finished difference. Result has 218 places, 192 transitions, 2353 flow [2024-06-27 23:30:20,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2353, PETRI_PLACES=218, PETRI_TRANSITIONS=192} [2024-06-27 23:30:20,670 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 189 predicate places. [2024-06-27 23:30:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 192 transitions, 2353 flow [2024-06-27 23:30:20,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:20,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:20,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:30:20,670 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:20,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1324545874, now seen corresponding path program 5 times [2024-06-27 23:30:20,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:20,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826643546] [2024-06-27 23:30:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:21,947 INFO 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 23:30:21,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:21,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826643546] [2024-06-27 23:30:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826643546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:21,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:21,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:21,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540019581] [2024-06-27 23:30:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:21,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:22,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:22,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 192 transitions, 2353 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:22,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:22,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:22,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:22,294 INFO L124 PetriNetUnfolderBase]: 480/838 cut-off events. [2024-06-27 23:30:22,294 INFO L125 PetriNetUnfolderBase]: For 69939/69939 co-relation queries the response was YES. [2024-06-27 23:30:22,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7769 conditions, 838 events. 480/838 cut-off events. For 69939/69939 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3811 event pairs, 68 based on Foata normal form. 1/838 useless extension candidates. Maximal degree in co-relation 7670. Up to 710 conditions per place. [2024-06-27 23:30:22,302 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 141 selfloop transitions, 56 changer transitions 0/199 dead transitions. [2024-06-27 23:30:22,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 199 transitions, 2763 flow [2024-06-27 23:30:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 23:30:22,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:30:22,304 INFO L175 Difference]: Start difference. First operand has 218 places, 192 transitions, 2353 flow. Second operand 8 states and 90 transitions. [2024-06-27 23:30:22,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 199 transitions, 2763 flow [2024-06-27 23:30:22,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 199 transitions, 2623 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:22,448 INFO L231 Difference]: Finished difference. Result has 220 places, 192 transitions, 2332 flow [2024-06-27 23:30:22,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=212, 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=8, PETRI_FLOW=2332, PETRI_PLACES=220, PETRI_TRANSITIONS=192} [2024-06-27 23:30:22,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 23:30:22,450 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 192 transitions, 2332 flow [2024-06-27 23:30:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:22,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:22,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:22,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:30:22,451 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:22,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 926333986, now seen corresponding path program 4 times [2024-06-27 23:30:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841437793] [2024-06-27 23:30:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:22,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:23,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:23,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841437793] [2024-06-27 23:30:23,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841437793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:23,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:23,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:23,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391062484] [2024-06-27 23:30:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:23,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:23,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:23,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:23,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:23,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:23,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 192 transitions, 2332 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:23,776 INFO L124 PetriNetUnfolderBase]: 484/846 cut-off events. [2024-06-27 23:30:23,777 INFO L125 PetriNetUnfolderBase]: For 73400/73400 co-relation queries the response was YES. [2024-06-27 23:30:23,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7755 conditions, 846 events. 484/846 cut-off events. For 73400/73400 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3864 event pairs, 70 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 7654. Up to 720 conditions per place. [2024-06-27 23:30:23,784 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 145 selfloop transitions, 54 changer transitions 0/201 dead transitions. [2024-06-27 23:30:23,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 201 transitions, 2766 flow [2024-06-27 23:30:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:23,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:30:23,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:30:23,786 INFO L175 Difference]: Start difference. First operand has 220 places, 192 transitions, 2332 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:30:23,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 201 transitions, 2766 flow [2024-06-27 23:30:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 201 transitions, 2654 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:23,957 INFO L231 Difference]: Finished difference. Result has 222 places, 193 transitions, 2352 flow [2024-06-27 23:30:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2352, PETRI_PLACES=222, PETRI_TRANSITIONS=193} [2024-06-27 23:30:23,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-27 23:30:23,958 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 193 transitions, 2352 flow [2024-06-27 23:30:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:23,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:30:23,959 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 926518684, now seen corresponding path program 2 times [2024-06-27 23:30:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812289504] [2024-06-27 23:30:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:25,090 INFO 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 23:30:25,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:25,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812289504] [2024-06-27 23:30:25,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812289504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:25,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:25,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304133059] [2024-06-27 23:30:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:25,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:25,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:25,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:25,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 193 transitions, 2352 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:25,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:25,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:25,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:25,382 INFO L124 PetriNetUnfolderBase]: 480/839 cut-off events. [2024-06-27 23:30:25,382 INFO L125 PetriNetUnfolderBase]: For 72212/72212 co-relation queries the response was YES. [2024-06-27 23:30:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7690 conditions, 839 events. 480/839 cut-off events. For 72212/72212 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3830 event pairs, 65 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 7589. Up to 795 conditions per place. [2024-06-27 23:30:25,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 177 selfloop transitions, 21 changer transitions 0/201 dead transitions. [2024-06-27 23:30:25,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 201 transitions, 2766 flow [2024-06-27 23:30:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:25,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:30:25,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 23:30:25,391 INFO L175 Difference]: Start difference. First operand has 222 places, 193 transitions, 2352 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:30:25,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 201 transitions, 2766 flow [2024-06-27 23:30:25,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 201 transitions, 2632 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:25,575 INFO L231 Difference]: Finished difference. Result has 223 places, 193 transitions, 2265 flow [2024-06-27 23:30:25,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2265, PETRI_PLACES=223, PETRI_TRANSITIONS=193} [2024-06-27 23:30:25,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-27 23:30:25,575 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 193 transitions, 2265 flow [2024-06-27 23:30:25,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 23:30:25,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:25,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:25,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:30:25,576 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:25,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash 926511926, now seen corresponding path program 10 times [2024-06-27 23:30:25,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:25,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671958029] [2024-06-27 23:30:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:26,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671958029] [2024-06-27 23:30:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671958029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:26,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:26,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250624210] [2024-06-27 23:30:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:26,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:26,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:26,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 193 transitions, 2265 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:26,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:26,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:26,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:27,022 INFO L124 PetriNetUnfolderBase]: 477/835 cut-off events. [2024-06-27 23:30:27,023 INFO L125 PetriNetUnfolderBase]: For 72108/72108 co-relation queries the response was YES. [2024-06-27 23:30:27,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 835 events. 477/835 cut-off events. For 72108/72108 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3829 event pairs, 61 based on Foata normal form. 2/836 useless extension candidates. Maximal degree in co-relation 7373. Up to 747 conditions per place. [2024-06-27 23:30:27,030 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 177 selfloop transitions, 29 changer transitions 0/208 dead transitions. [2024-06-27 23:30:27,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 208 transitions, 3067 flow [2024-06-27 23:30:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:30:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:30:27,032 INFO L175 Difference]: Start difference. First operand has 223 places, 193 transitions, 2265 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:30:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 208 transitions, 3067 flow [2024-06-27 23:30:27,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 208 transitions, 2999 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:27,214 INFO L231 Difference]: Finished difference. Result has 224 places, 195 transitions, 2297 flow [2024-06-27 23:30:27,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2297, PETRI_PLACES=224, PETRI_TRANSITIONS=195} [2024-06-27 23:30:27,215 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-27 23:30:27,215 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 195 transitions, 2297 flow [2024-06-27 23:30:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:27,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:27,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:27,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:30:27,216 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:27,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 926511740, now seen corresponding path program 6 times [2024-06-27 23:30:27,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:27,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537385121] [2024-06-27 23:30:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:28,424 INFO 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 23:30:28,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:28,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537385121] [2024-06-27 23:30:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537385121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621845217] [2024-06-27 23:30:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:28,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:28,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 195 transitions, 2297 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:28,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:28,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:28,771 INFO L124 PetriNetUnfolderBase]: 474/830 cut-off events. [2024-06-27 23:30:28,771 INFO L125 PetriNetUnfolderBase]: For 71041/71041 co-relation queries the response was YES. [2024-06-27 23:30:28,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7450 conditions, 830 events. 474/830 cut-off events. For 71041/71041 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3801 event pairs, 64 based on Foata normal form. 1/830 useless extension candidates. Maximal degree in co-relation 7347. Up to 786 conditions per place. [2024-06-27 23:30:28,780 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 177 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-27 23:30:28,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 202 transitions, 2713 flow [2024-06-27 23:30:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 23:30:28,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-27 23:30:28,781 INFO L175 Difference]: Start difference. First operand has 224 places, 195 transitions, 2297 flow. Second operand 8 states and 83 transitions. [2024-06-27 23:30:28,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 202 transitions, 2713 flow [2024-06-27 23:30:28,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 202 transitions, 2629 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:28,950 INFO L231 Difference]: Finished difference. Result has 228 places, 195 transitions, 2265 flow [2024-06-27 23:30:28,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2265, PETRI_PLACES=228, PETRI_TRANSITIONS=195} [2024-06-27 23:30:28,951 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2024-06-27 23:30:28,951 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 195 transitions, 2265 flow [2024-06-27 23:30:28,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:28,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:28,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:30:28,952 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:28,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1227783526, now seen corresponding path program 5 times [2024-06-27 23:30:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:28,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229907428] [2024-06-27 23:30:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:28,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:29,647 INFO 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 23:30:29,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229907428] [2024-06-27 23:30:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229907428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:29,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879183740] [2024-06-27 23:30:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:29,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:29,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:29,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:29,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:29,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:29,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 195 transitions, 2265 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:29,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:29,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:29,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:30,067 INFO L124 PetriNetUnfolderBase]: 483/848 cut-off events. [2024-06-27 23:30:30,067 INFO L125 PetriNetUnfolderBase]: For 74611/74611 co-relation queries the response was YES. [2024-06-27 23:30:30,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 848 events. 483/848 cut-off events. For 74611/74611 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3951 event pairs, 56 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 7397. Up to 771 conditions per place. [2024-06-27 23:30:30,075 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 185 selfloop transitions, 25 changer transitions 0/212 dead transitions. [2024-06-27 23:30:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 212 transitions, 2751 flow [2024-06-27 23:30:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:30:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:30:30,076 INFO L175 Difference]: Start difference. First operand has 228 places, 195 transitions, 2265 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:30:30,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 212 transitions, 2751 flow [2024-06-27 23:30:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 212 transitions, 2700 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:30,269 INFO L231 Difference]: Finished difference. Result has 231 places, 197 transitions, 2300 flow [2024-06-27 23:30:30,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2300, PETRI_PLACES=231, PETRI_TRANSITIONS=197} [2024-06-27 23:30:30,269 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2024-06-27 23:30:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 197 transitions, 2300 flow [2024-06-27 23:30:30,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:30,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:30,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:30,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:30:30,270 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1567191354, now seen corresponding path program 6 times [2024-06-27 23:30:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012846173] [2024-06-27 23:30:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:30,810 INFO 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 23:30:30,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012846173] [2024-06-27 23:30:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012846173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:30,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:30,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695019881] [2024-06-27 23:30:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:30,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:30,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:30,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:30,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 197 transitions, 2300 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 23:30:30,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:30,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:30,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:31,125 INFO L124 PetriNetUnfolderBase]: 470/847 cut-off events. [2024-06-27 23:30:31,125 INFO L125 PetriNetUnfolderBase]: For 78305/78310 co-relation queries the response was YES. [2024-06-27 23:30:31,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7524 conditions, 847 events. 470/847 cut-off events. For 78305/78310 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4100 event pairs, 56 based on Foata normal form. 7/853 useless extension candidates. Maximal degree in co-relation 7417. Up to 739 conditions per place. [2024-06-27 23:30:31,132 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 166 selfloop transitions, 25 changer transitions 0/212 dead transitions. [2024-06-27 23:30:31,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 212 transitions, 2746 flow [2024-06-27 23:30:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 23:30:31,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-27 23:30:31,133 INFO L175 Difference]: Start difference. First operand has 231 places, 197 transitions, 2300 flow. Second operand 7 states and 86 transitions. [2024-06-27 23:30:31,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 212 transitions, 2746 flow [2024-06-27 23:30:31,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 212 transitions, 2680 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:31,327 INFO L231 Difference]: Finished difference. Result has 233 places, 199 transitions, 2324 flow [2024-06-27 23:30:31,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2324, PETRI_PLACES=233, PETRI_TRANSITIONS=199} [2024-06-27 23:30:31,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 204 predicate places. [2024-06-27 23:30:31,327 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 199 transitions, 2324 flow [2024-06-27 23:30:31,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 23:30:31,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:31,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:30:31,328 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1567130904, now seen corresponding path program 7 times [2024-06-27 23:30:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:31,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959724899] [2024-06-27 23:30:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:31,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:32,064 INFO 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 23:30:32,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959724899] [2024-06-27 23:30:32,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959724899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:32,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:32,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306703191] [2024-06-27 23:30:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:32,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:32,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 199 transitions, 2324 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:32,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:32,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:32,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:32,443 INFO L124 PetriNetUnfolderBase]: 496/878 cut-off events. [2024-06-27 23:30:32,443 INFO L125 PetriNetUnfolderBase]: For 79791/79791 co-relation queries the response was YES. [2024-06-27 23:30:32,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7741 conditions, 878 events. 496/878 cut-off events. For 79791/79791 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4190 event pairs, 68 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 7633. Up to 799 conditions per place. [2024-06-27 23:30:32,451 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 182 selfloop transitions, 30 changer transitions 0/214 dead transitions. [2024-06-27 23:30:32,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 214 transitions, 2808 flow [2024-06-27 23:30:32,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 23:30:32,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-27 23:30:32,452 INFO L175 Difference]: Start difference. First operand has 233 places, 199 transitions, 2324 flow. Second operand 8 states and 91 transitions. [2024-06-27 23:30:32,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 214 transitions, 2808 flow [2024-06-27 23:30:32,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 214 transitions, 2738 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:32,650 INFO L231 Difference]: Finished difference. Result has 237 places, 200 transitions, 2345 flow [2024-06-27 23:30:32,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2345, PETRI_PLACES=237, PETRI_TRANSITIONS=200} [2024-06-27 23:30:32,651 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-27 23:30:32,651 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 200 transitions, 2345 flow [2024-06-27 23:30:32,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:32,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:32,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:32,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:30:32,652 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:32,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash -979974494, now seen corresponding path program 8 times [2024-06-27 23:30:32,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:32,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609782171] [2024-06-27 23:30:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609782171] [2024-06-27 23:30:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609782171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:33,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:30:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011808411] [2024-06-27 23:30:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:33,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:30:33,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:30:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:30:33,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:30:33,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 200 transitions, 2345 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:33,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:33,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:30:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:33,455 INFO L124 PetriNetUnfolderBase]: 448/840 cut-off events. [2024-06-27 23:30:33,455 INFO L125 PetriNetUnfolderBase]: For 85592/85601 co-relation queries the response was YES. [2024-06-27 23:30:33,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7373 conditions, 840 events. 448/840 cut-off events. For 85592/85601 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4331 event pairs, 39 based on Foata normal form. 11/846 useless extension candidates. Maximal degree in co-relation 7264. Up to 507 conditions per place. [2024-06-27 23:30:33,463 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 97 selfloop transitions, 36 changer transitions 0/213 dead transitions. [2024-06-27 23:30:33,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 213 transitions, 2698 flow [2024-06-27 23:30:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:30:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:30:33,464 INFO L175 Difference]: Start difference. First operand has 237 places, 200 transitions, 2345 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:30:33,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 213 transitions, 2698 flow [2024-06-27 23:30:33,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 213 transitions, 2585 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:33,686 INFO L231 Difference]: Finished difference. Result has 238 places, 203 transitions, 2390 flow [2024-06-27 23:30:33,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2390, PETRI_PLACES=238, PETRI_TRANSITIONS=203} [2024-06-27 23:30:33,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 23:30:33,687 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 203 transitions, 2390 flow [2024-06-27 23:30:33,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 23:30:33,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:33,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:33,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:30:33,687 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:33,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:33,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1557299750, now seen corresponding path program 7 times [2024-06-27 23:30:33,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:33,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909480814] [2024-06-27 23:30:33,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:34,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909480814] [2024-06-27 23:30:34,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909480814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:34,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:34,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323671209] [2024-06-27 23:30:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:34,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:34,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 203 transitions, 2390 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:34,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:34,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:34,917 INFO L124 PetriNetUnfolderBase]: 515/914 cut-off events. [2024-06-27 23:30:34,917 INFO L125 PetriNetUnfolderBase]: For 84450/84450 co-relation queries the response was YES. [2024-06-27 23:30:34,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 914 events. 515/914 cut-off events. For 84450/84450 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4448 event pairs, 75 based on Foata normal form. 2/915 useless extension candidates. Maximal degree in co-relation 7921. Up to 833 conditions per place. [2024-06-27 23:30:34,926 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 184 selfloop transitions, 34 changer transitions 0/220 dead transitions. [2024-06-27 23:30:34,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 220 transitions, 2957 flow [2024-06-27 23:30:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 23:30:34,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:30:34,928 INFO L175 Difference]: Start difference. First operand has 238 places, 203 transitions, 2390 flow. Second operand 8 states and 92 transitions. [2024-06-27 23:30:34,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 220 transitions, 2957 flow [2024-06-27 23:30:35,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 220 transitions, 2904 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:35,217 INFO L231 Difference]: Finished difference. Result has 243 places, 207 transitions, 2520 flow [2024-06-27 23:30:35,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2520, PETRI_PLACES=243, PETRI_TRANSITIONS=207} [2024-06-27 23:30:35,218 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 23:30:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 207 transitions, 2520 flow [2024-06-27 23:30:35,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:35,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:35,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:35,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:30:35,219 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:35,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 874159652, now seen corresponding path program 9 times [2024-06-27 23:30:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:35,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518292207] [2024-06-27 23:30:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518292207] [2024-06-27 23:30:36,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518292207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:36,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:36,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:36,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897183876] [2024-06-27 23:30:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:36,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:36,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:36,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 207 transitions, 2520 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:36,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:36,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:36,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:36,412 INFO L124 PetriNetUnfolderBase]: 519/922 cut-off events. [2024-06-27 23:30:36,412 INFO L125 PetriNetUnfolderBase]: For 85108/85108 co-relation queries the response was YES. [2024-06-27 23:30:36,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 922 events. 519/922 cut-off events. For 85108/85108 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4523 event pairs, 73 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 7994. Up to 825 conditions per place. [2024-06-27 23:30:36,422 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 194 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-06-27 23:30:36,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 224 transitions, 3032 flow [2024-06-27 23:30:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:30:36,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:30:36,423 INFO L175 Difference]: Start difference. First operand has 243 places, 207 transitions, 2520 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:30:36,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 224 transitions, 3032 flow [2024-06-27 23:30:36,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 224 transitions, 2898 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:36,667 INFO L231 Difference]: Finished difference. Result has 246 places, 208 transitions, 2476 flow [2024-06-27 23:30:36,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2386, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2476, PETRI_PLACES=246, PETRI_TRANSITIONS=208} [2024-06-27 23:30:36,668 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-27 23:30:36,668 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 208 transitions, 2476 flow [2024-06-27 23:30:36,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:36,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:36,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:36,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:30:36,669 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:36,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash 962497562, now seen corresponding path program 10 times [2024-06-27 23:30:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:36,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039888053] [2024-06-27 23:30:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:36,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039888053] [2024-06-27 23:30:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039888053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:37,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:37,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676536381] [2024-06-27 23:30:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:37,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:37,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:37,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 208 transitions, 2476 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:37,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:37,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:37,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:37,944 INFO L124 PetriNetUnfolderBase]: 523/931 cut-off events. [2024-06-27 23:30:37,945 INFO L125 PetriNetUnfolderBase]: For 87463/87463 co-relation queries the response was YES. [2024-06-27 23:30:37,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8148 conditions, 931 events. 523/931 cut-off events. For 87463/87463 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4585 event pairs, 67 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 8036. Up to 857 conditions per place. [2024-06-27 23:30:37,952 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 190 selfloop transitions, 31 changer transitions 0/223 dead transitions. [2024-06-27 23:30:37,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 223 transitions, 2982 flow [2024-06-27 23:30:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:30:37,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-27 23:30:37,953 INFO L175 Difference]: Start difference. First operand has 246 places, 208 transitions, 2476 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:30:37,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 223 transitions, 2982 flow [2024-06-27 23:30:38,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 223 transitions, 2904 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:38,173 INFO L231 Difference]: Finished difference. Result has 247 places, 209 transitions, 2494 flow [2024-06-27 23:30:38,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2398, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2494, PETRI_PLACES=247, PETRI_TRANSITIONS=209} [2024-06-27 23:30:38,174 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-06-27 23:30:38,175 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 209 transitions, 2494 flow [2024-06-27 23:30:38,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:38,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:38,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:30:38,175 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:38,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -520394522, now seen corresponding path program 8 times [2024-06-27 23:30:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36715453] [2024-06-27 23:30:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:39,267 INFO 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 23:30:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36715453] [2024-06-27 23:30:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36715453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:39,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:39,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:39,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625432973] [2024-06-27 23:30:39,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:39,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:39,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:39,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:39,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:39,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:39,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 209 transitions, 2494 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:39,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:39,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:39,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:39,626 INFO L124 PetriNetUnfolderBase]: 526/936 cut-off events. [2024-06-27 23:30:39,626 INFO L125 PetriNetUnfolderBase]: For 87292/87292 co-relation queries the response was YES. [2024-06-27 23:30:39,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8216 conditions, 936 events. 526/936 cut-off events. For 87292/87292 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4602 event pairs, 67 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 8105. Up to 859 conditions per place. [2024-06-27 23:30:39,635 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 188 selfloop transitions, 34 changer transitions 0/224 dead transitions. [2024-06-27 23:30:39,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 224 transitions, 3034 flow [2024-06-27 23:30:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 23:30:39,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-27 23:30:39,636 INFO L175 Difference]: Start difference. First operand has 247 places, 209 transitions, 2494 flow. Second operand 8 states and 91 transitions. [2024-06-27 23:30:39,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 224 transitions, 3034 flow [2024-06-27 23:30:39,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 224 transitions, 2952 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:39,875 INFO L231 Difference]: Finished difference. Result has 249 places, 211 transitions, 2555 flow [2024-06-27 23:30:39,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2555, PETRI_PLACES=249, PETRI_TRANSITIONS=211} [2024-06-27 23:30:39,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 23:30:39,876 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 211 transitions, 2555 flow [2024-06-27 23:30:39,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:39,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:39,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:39,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:30:39,876 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:39,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:39,877 INFO L85 PathProgramCache]: Analyzing trace with hash 363478952, now seen corresponding path program 11 times [2024-06-27 23:30:39,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:39,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780852042] [2024-06-27 23:30:39,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:39,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:40,775 INFO 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 23:30:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780852042] [2024-06-27 23:30:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780852042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:40,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695214411] [2024-06-27 23:30:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:40,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:40,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:40,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 211 transitions, 2555 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:40,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:40,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:41,240 INFO L124 PetriNetUnfolderBase]: 530/943 cut-off events. [2024-06-27 23:30:41,241 INFO L125 PetriNetUnfolderBase]: For 92210/92210 co-relation queries the response was YES. [2024-06-27 23:30:41,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8312 conditions, 943 events. 530/943 cut-off events. For 92210/92210 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4672 event pairs, 66 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 8201. Up to 865 conditions per place. [2024-06-27 23:30:41,248 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 194 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-27 23:30:41,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 225 transitions, 3065 flow [2024-06-27 23:30:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:41,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:30:41,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:30:41,249 INFO L175 Difference]: Start difference. First operand has 249 places, 211 transitions, 2555 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:30:41,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 225 transitions, 3065 flow [2024-06-27 23:30:41,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 225 transitions, 2956 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:41,504 INFO L231 Difference]: Finished difference. Result has 252 places, 212 transitions, 2541 flow [2024-06-27 23:30:41,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2541, PETRI_PLACES=252, PETRI_TRANSITIONS=212} [2024-06-27 23:30:41,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 23:30:41,504 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 212 transitions, 2541 flow [2024-06-27 23:30:41,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:41,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:41,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:41,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:30:41,505 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:41,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:41,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1575320378, now seen corresponding path program 9 times [2024-06-27 23:30:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:41,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609319473] [2024-06-27 23:30:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:42,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609319473] [2024-06-27 23:30:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609319473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:42,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051241999] [2024-06-27 23:30:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:42,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:42,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:42,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 212 transitions, 2541 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:42,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:42,978 INFO L124 PetriNetUnfolderBase]: 529/941 cut-off events. [2024-06-27 23:30:42,979 INFO L125 PetriNetUnfolderBase]: For 92263/92263 co-relation queries the response was YES. [2024-06-27 23:30:42,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 941 events. 529/941 cut-off events. For 92263/92263 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4643 event pairs, 66 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 8138. Up to 860 conditions per place. [2024-06-27 23:30:42,988 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 191 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-27 23:30:42,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 226 transitions, 3087 flow [2024-06-27 23:30:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:30:42,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:30:42,989 INFO L175 Difference]: Start difference. First operand has 252 places, 212 transitions, 2541 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:30:42,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 226 transitions, 3087 flow [2024-06-27 23:30:43,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 226 transitions, 2990 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:43,248 INFO L231 Difference]: Finished difference. Result has 254 places, 214 transitions, 2590 flow [2024-06-27 23:30:43,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2590, PETRI_PLACES=254, PETRI_TRANSITIONS=214} [2024-06-27 23:30:43,249 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 225 predicate places. [2024-06-27 23:30:43,249 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 214 transitions, 2590 flow [2024-06-27 23:30:43,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:43,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:43,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:30:43,250 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:43,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1457055068, now seen corresponding path program 10 times [2024-06-27 23:30:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961197341] [2024-06-27 23:30:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:44,530 INFO 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 23:30:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:44,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961197341] [2024-06-27 23:30:44,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961197341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:44,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:44,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:44,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218416740] [2024-06-27 23:30:44,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:44,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:44,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:44,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 214 transitions, 2590 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:44,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:44,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:44,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:44,890 INFO L124 PetriNetUnfolderBase]: 526/936 cut-off events. [2024-06-27 23:30:44,890 INFO L125 PetriNetUnfolderBase]: For 89362/89362 co-relation queries the response was YES. [2024-06-27 23:30:44,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8157 conditions, 936 events. 526/936 cut-off events. For 89362/89362 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4641 event pairs, 92 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 8043. Up to 900 conditions per place. [2024-06-27 23:30:44,900 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 206 selfloop transitions, 17 changer transitions 0/225 dead transitions. [2024-06-27 23:30:44,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 3064 flow [2024-06-27 23:30:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:30:44,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:30:44,901 INFO L175 Difference]: Start difference. First operand has 254 places, 214 transitions, 2590 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:30:44,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 3064 flow [2024-06-27 23:30:45,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 225 transitions, 2918 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:45,173 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2484 flow [2024-06-27 23:30:45,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2484, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2024-06-27 23:30:45,173 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:30:45,173 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2484 flow [2024-06-27 23:30:45,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:45,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:45,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:45,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:30:45,174 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:45,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1457232698, now seen corresponding path program 11 times [2024-06-27 23:30:45,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:45,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150686356] [2024-06-27 23:30:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:45,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:46,214 INFO 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 23:30:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150686356] [2024-06-27 23:30:46,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150686356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:46,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:46,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:46,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414393344] [2024-06-27 23:30:46,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:46,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:46,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:46,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:46,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:46,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:46,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2484 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:46,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:46,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:46,569 INFO L124 PetriNetUnfolderBase]: 524/934 cut-off events. [2024-06-27 23:30:46,570 INFO L125 PetriNetUnfolderBase]: For 88231/88231 co-relation queries the response was YES. [2024-06-27 23:30:46,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 934 events. 524/934 cut-off events. For 88231/88231 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4628 event pairs, 70 based on Foata normal form. 1/934 useless extension candidates. Maximal degree in co-relation 7856. Up to 833 conditions per place. [2024-06-27 23:30:46,579 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 184 selfloop transitions, 42 changer transitions 0/228 dead transitions. [2024-06-27 23:30:46,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 228 transitions, 3064 flow [2024-06-27 23:30:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 23:30:46,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 23:30:46,581 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2484 flow. Second operand 8 states and 93 transitions. [2024-06-27 23:30:46,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 228 transitions, 3064 flow [2024-06-27 23:30:46,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 228 transitions, 3001 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:46,860 INFO L231 Difference]: Finished difference. Result has 256 places, 216 transitions, 2587 flow [2024-06-27 23:30:46,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2587, PETRI_PLACES=256, PETRI_TRANSITIONS=216} [2024-06-27 23:30:46,861 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 23:30:46,861 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 216 transitions, 2587 flow [2024-06-27 23:30:46,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:46,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:46,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:46,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:30:46,861 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:46,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1457232822, now seen corresponding path program 12 times [2024-06-27 23:30:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299168035] [2024-06-27 23:30:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:46,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:47,820 INFO 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 23:30:47,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:47,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299168035] [2024-06-27 23:30:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299168035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:47,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:47,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:47,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795050362] [2024-06-27 23:30:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:47,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:47,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:47,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 216 transitions, 2587 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:47,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:47,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:47,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:48,215 INFO L124 PetriNetUnfolderBase]: 521/929 cut-off events. [2024-06-27 23:30:48,216 INFO L125 PetriNetUnfolderBase]: For 85770/85770 co-relation queries the response was YES. [2024-06-27 23:30:48,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7819 conditions, 929 events. 521/929 cut-off events. For 85770/85770 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4596 event pairs, 69 based on Foata normal form. 2/930 useless extension candidates. Maximal degree in co-relation 7704. Up to 831 conditions per place. [2024-06-27 23:30:48,225 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 186 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-06-27 23:30:48,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 228 transitions, 3069 flow [2024-06-27 23:30:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:48,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:30:48,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:30:48,226 INFO L175 Difference]: Start difference. First operand has 256 places, 216 transitions, 2587 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:30:48,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 228 transitions, 3069 flow [2024-06-27 23:30:48,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 228 transitions, 2939 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:48,521 INFO L231 Difference]: Finished difference. Result has 259 places, 216 transitions, 2541 flow [2024-06-27 23:30:48,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2541, PETRI_PLACES=259, PETRI_TRANSITIONS=216} [2024-06-27 23:30:48,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:30:48,521 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 216 transitions, 2541 flow [2024-06-27 23:30:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 23:30:48,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:48,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:48,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:30:48,522 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:48,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1115144946, now seen corresponding path program 1 times [2024-06-27 23:30:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460133106] [2024-06-27 23:30:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:48,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:49,560 INFO 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 23:30:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460133106] [2024-06-27 23:30:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460133106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:49,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:49,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520339157] [2024-06-27 23:30:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:49,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:49,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:49,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 216 transitions, 2541 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:49,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:49,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:49,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:50,003 INFO L124 PetriNetUnfolderBase]: 525/936 cut-off events. [2024-06-27 23:30:50,003 INFO L125 PetriNetUnfolderBase]: For 88739/88739 co-relation queries the response was YES. [2024-06-27 23:30:50,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7882 conditions, 936 events. 525/936 cut-off events. For 88739/88739 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4647 event pairs, 66 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 7765. Up to 849 conditions per place. [2024-06-27 23:30:50,013 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 203 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-06-27 23:30:50,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 231 transitions, 3071 flow [2024-06-27 23:30:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:30:50,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 23:30:50,014 INFO L175 Difference]: Start difference. First operand has 259 places, 216 transitions, 2541 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:30:50,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 231 transitions, 3071 flow [2024-06-27 23:30:50,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 231 transitions, 2915 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:50,277 INFO L231 Difference]: Finished difference. Result has 261 places, 217 transitions, 2479 flow [2024-06-27 23:30:50,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2479, PETRI_PLACES=261, PETRI_TRANSITIONS=217} [2024-06-27 23:30:50,280 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-27 23:30:50,281 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 2479 flow [2024-06-27 23:30:50,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:50,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:50,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:30:50,281 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:50,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1113270996, now seen corresponding path program 2 times [2024-06-27 23:30:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790030887] [2024-06-27 23:30:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:51,516 INFO 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 23:30:51,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790030887] [2024-06-27 23:30:51,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790030887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:51,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:51,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903256430] [2024-06-27 23:30:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:51,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:51,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:51,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 217 transitions, 2479 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:51,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:51,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:51,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:51,954 INFO L124 PetriNetUnfolderBase]: 533/952 cut-off events. [2024-06-27 23:30:51,955 INFO L125 PetriNetUnfolderBase]: For 90045/90045 co-relation queries the response was YES. [2024-06-27 23:30:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 952 events. 533/952 cut-off events. For 90045/90045 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4783 event pairs, 70 based on Foata normal form. 2/953 useless extension candidates. Maximal degree in co-relation 7789. Up to 871 conditions per place. [2024-06-27 23:30:51,966 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 200 selfloop transitions, 29 changer transitions 0/231 dead transitions. [2024-06-27 23:30:51,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 231 transitions, 3008 flow [2024-06-27 23:30:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:30:51,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:30:51,967 INFO L175 Difference]: Start difference. First operand has 261 places, 217 transitions, 2479 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:30:51,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 231 transitions, 3008 flow [2024-06-27 23:30:52,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 231 transitions, 2924 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:52,348 INFO L231 Difference]: Finished difference. Result has 263 places, 219 transitions, 2504 flow [2024-06-27 23:30:52,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2504, PETRI_PLACES=263, PETRI_TRANSITIONS=219} [2024-06-27 23:30:52,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-27 23:30:52,349 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 219 transitions, 2504 flow [2024-06-27 23:30:52,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:52,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:52,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:52,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:30:52,349 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:52,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:52,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1113267121, now seen corresponding path program 1 times [2024-06-27 23:30:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910449642] [2024-06-27 23:30:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:52,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:53,704 INFO 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 23:30:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910449642] [2024-06-27 23:30:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910449642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:53,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276989302] [2024-06-27 23:30:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:53,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:53,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:53,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 219 transitions, 2504 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:53,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:53,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:54,190 INFO L124 PetriNetUnfolderBase]: 551/982 cut-off events. [2024-06-27 23:30:54,191 INFO L125 PetriNetUnfolderBase]: For 93873/93873 co-relation queries the response was YES. [2024-06-27 23:30:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 982 events. 551/982 cut-off events. For 93873/93873 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4972 event pairs, 69 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 8029. Up to 879 conditions per place. [2024-06-27 23:30:54,201 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 198 selfloop transitions, 36 changer transitions 0/236 dead transitions. [2024-06-27 23:30:54,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 236 transitions, 3136 flow [2024-06-27 23:30:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:30:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:30:54,209 INFO L175 Difference]: Start difference. First operand has 263 places, 219 transitions, 2504 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:30:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 236 transitions, 3136 flow [2024-06-27 23:30:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 236 transitions, 3043 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:54,522 INFO L231 Difference]: Finished difference. Result has 267 places, 223 transitions, 2561 flow [2024-06-27 23:30:54,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2561, PETRI_PLACES=267, PETRI_TRANSITIONS=223} [2024-06-27 23:30:54,523 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-27 23:30:54,523 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 223 transitions, 2561 flow [2024-06-27 23:30:54,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:54,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:54,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:54,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:30:54,523 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:54,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1113267276, now seen corresponding path program 3 times [2024-06-27 23:30:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62906600] [2024-06-27 23:30:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:55,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:55,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62906600] [2024-06-27 23:30:55,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62906600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:55,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:55,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500282978] [2024-06-27 23:30:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:55,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:55,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:55,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 223 transitions, 2561 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:55,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:55,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:55,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:56,170 INFO L124 PetriNetUnfolderBase]: 555/990 cut-off events. [2024-06-27 23:30:56,170 INFO L125 PetriNetUnfolderBase]: For 96598/96598 co-relation queries the response was YES. [2024-06-27 23:30:56,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 990 events. 555/990 cut-off events. For 96598/96598 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5021 event pairs, 71 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 8142. Up to 901 conditions per place. [2024-06-27 23:30:56,179 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 201 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-06-27 23:30:56,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 236 transitions, 3127 flow [2024-06-27 23:30:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:30:56,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:30:56,180 INFO L175 Difference]: Start difference. First operand has 267 places, 223 transitions, 2561 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:30:56,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 236 transitions, 3127 flow [2024-06-27 23:30:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 236 transitions, 3021 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:56,491 INFO L231 Difference]: Finished difference. Result has 268 places, 224 transitions, 2568 flow [2024-06-27 23:30:56,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2455, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2568, PETRI_PLACES=268, PETRI_TRANSITIONS=224} [2024-06-27 23:30:56,492 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-27 23:30:56,492 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 224 transitions, 2568 flow [2024-06-27 23:30:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:56,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:56,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:30:56,493 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:56,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1026579186, now seen corresponding path program 4 times [2024-06-27 23:30:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304550026] [2024-06-27 23:30:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:57,666 INFO 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 23:30:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304550026] [2024-06-27 23:30:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304550026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:57,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:57,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326992424] [2024-06-27 23:30:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:57,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:57,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:30:57,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 224 transitions, 2568 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:57,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:57,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:30:57,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:58,050 INFO L124 PetriNetUnfolderBase]: 559/998 cut-off events. [2024-06-27 23:30:58,050 INFO L125 PetriNetUnfolderBase]: For 99672/99672 co-relation queries the response was YES. [2024-06-27 23:30:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 998 events. 559/998 cut-off events. For 99672/99672 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5092 event pairs, 73 based on Foata normal form. 2/999 useless extension candidates. Maximal degree in co-relation 8204. Up to 917 conditions per place. [2024-06-27 23:30:58,060 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 206 selfloop transitions, 29 changer transitions 0/237 dead transitions. [2024-06-27 23:30:58,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 237 transitions, 3110 flow [2024-06-27 23:30:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:30:58,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:30:58,061 INFO L175 Difference]: Start difference. First operand has 268 places, 224 transitions, 2568 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:30:58,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 237 transitions, 3110 flow [2024-06-27 23:30:58,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 237 transitions, 3009 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:58,399 INFO L231 Difference]: Finished difference. Result has 270 places, 225 transitions, 2573 flow [2024-06-27 23:30:58,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2573, PETRI_PLACES=270, PETRI_TRANSITIONS=225} [2024-06-27 23:30:58,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:30:58,400 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 225 transitions, 2573 flow [2024-06-27 23:30:58,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:30:58,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:58,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:58,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:30:58,400 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:58,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1741794481, now seen corresponding path program 1 times [2024-06-27 23:30:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49451494] [2024-06-27 23:30:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49451494] [2024-06-27 23:30:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49451494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364546441] [2024-06-27 23:30:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:00,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:00,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 225 transitions, 2573 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:00,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:00,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:00,385 INFO L124 PetriNetUnfolderBase]: 563/1006 cut-off events. [2024-06-27 23:31:00,385 INFO L125 PetriNetUnfolderBase]: For 101673/101673 co-relation queries the response was YES. [2024-06-27 23:31:00,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8342 conditions, 1006 events. 563/1006 cut-off events. For 101673/101673 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5147 event pairs, 98 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 8219. Up to 956 conditions per place. [2024-06-27 23:31:00,396 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 214 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2024-06-27 23:31:00,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 238 transitions, 3095 flow [2024-06-27 23:31:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:31:00,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:31:00,399 INFO L175 Difference]: Start difference. First operand has 270 places, 225 transitions, 2573 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:31:00,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 238 transitions, 3095 flow [2024-06-27 23:31:00,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 238 transitions, 2990 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:00,782 INFO L231 Difference]: Finished difference. Result has 271 places, 226 transitions, 2540 flow [2024-06-27 23:31:00,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2540, PETRI_PLACES=271, PETRI_TRANSITIONS=226} [2024-06-27 23:31:00,783 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-27 23:31:00,783 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 226 transitions, 2540 flow [2024-06-27 23:31:00,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:00,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:00,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:00,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:31:00,784 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -169645238, now seen corresponding path program 1 times [2024-06-27 23:31:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681400206] [2024-06-27 23:31:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:02,326 INFO 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 23:31:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681400206] [2024-06-27 23:31:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681400206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:02,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:02,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797456673] [2024-06-27 23:31:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:02,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:02,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:02,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 226 transitions, 2540 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:02,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:02,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:02,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:02,804 INFO L124 PetriNetUnfolderBase]: 569/1016 cut-off events. [2024-06-27 23:31:02,805 INFO L125 PetriNetUnfolderBase]: For 103375/103375 co-relation queries the response was YES. [2024-06-27 23:31:02,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8360 conditions, 1016 events. 569/1016 cut-off events. For 103375/103375 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5217 event pairs, 98 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 8239. Up to 917 conditions per place. [2024-06-27 23:31:02,815 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 208 selfloop transitions, 32 changer transitions 0/243 dead transitions. [2024-06-27 23:31:02,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 243 transitions, 3326 flow [2024-06-27 23:31:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:31:02,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:31:02,816 INFO L175 Difference]: Start difference. First operand has 271 places, 226 transitions, 2540 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:31:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 243 transitions, 3326 flow [2024-06-27 23:31:03,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 243 transitions, 3229 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:03,177 INFO L231 Difference]: Finished difference. Result has 271 places, 228 transitions, 2540 flow [2024-06-27 23:31:03,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2540, PETRI_PLACES=271, PETRI_TRANSITIONS=228} [2024-06-27 23:31:03,178 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-27 23:31:03,178 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 228 transitions, 2540 flow [2024-06-27 23:31:03,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:03,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:31:03,179 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:03,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1742004010, now seen corresponding path program 2 times [2024-06-27 23:31:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:03,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504710477] [2024-06-27 23:31:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:05,846 INFO 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 23:31:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:05,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504710477] [2024-06-27 23:31:05,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504710477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:05,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262860944] [2024-06-27 23:31:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:05,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:05,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 228 transitions, 2540 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:05,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:05,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:05,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:06,344 INFO L124 PetriNetUnfolderBase]: 565/1010 cut-off events. [2024-06-27 23:31:06,345 INFO L125 PetriNetUnfolderBase]: For 99182/99182 co-relation queries the response was YES. [2024-06-27 23:31:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8142 conditions, 1010 events. 565/1010 cut-off events. For 99182/99182 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5176 event pairs, 95 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 8021. Up to 931 conditions per place. [2024-06-27 23:31:06,354 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 212 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-27 23:31:06,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 243 transitions, 3146 flow [2024-06-27 23:31:06,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:31:06,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 23:31:06,355 INFO L175 Difference]: Start difference. First operand has 271 places, 228 transitions, 2540 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:31:06,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 243 transitions, 3146 flow [2024-06-27 23:31:06,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 243 transitions, 3050 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:06,705 INFO L231 Difference]: Finished difference. Result has 274 places, 229 transitions, 2528 flow [2024-06-27 23:31:06,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2528, PETRI_PLACES=274, PETRI_TRANSITIONS=229} [2024-06-27 23:31:06,706 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:31:06,706 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 229 transitions, 2528 flow [2024-06-27 23:31:06,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:06,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:06,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:31:06,707 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:06,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:06,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1742009962, now seen corresponding path program 5 times [2024-06-27 23:31:06,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:06,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205426139] [2024-06-27 23:31:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:06,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:08,059 INFO 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 23:31:08,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:08,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205426139] [2024-06-27 23:31:08,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205426139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:08,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:08,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:08,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613025760] [2024-06-27 23:31:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:08,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:08,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:08,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 229 transitions, 2528 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:08,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:08,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:08,417 INFO L124 PetriNetUnfolderBase]: 569/1018 cut-off events. [2024-06-27 23:31:08,418 INFO L125 PetriNetUnfolderBase]: For 102094/102094 co-relation queries the response was YES. [2024-06-27 23:31:08,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8242 conditions, 1018 events. 569/1018 cut-off events. For 102094/102094 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5235 event pairs, 96 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 8119. Up to 976 conditions per place. [2024-06-27 23:31:08,428 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 219 selfloop transitions, 19 changer transitions 0/240 dead transitions. [2024-06-27 23:31:08,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 3072 flow [2024-06-27 23:31:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:08,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 23:31:08,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-27 23:31:08,430 INFO L175 Difference]: Start difference. First operand has 274 places, 229 transitions, 2528 flow. Second operand 9 states and 91 transitions. [2024-06-27 23:31:08,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 3072 flow [2024-06-27 23:31:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 240 transitions, 2985 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:08,816 INFO L231 Difference]: Finished difference. Result has 275 places, 230 transitions, 2529 flow [2024-06-27 23:31:08,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2443, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2529, PETRI_PLACES=275, PETRI_TRANSITIONS=230} [2024-06-27 23:31:08,826 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-27 23:31:08,826 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 230 transitions, 2529 flow [2024-06-27 23:31:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:08,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:08,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:08,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:31:08,827 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:08,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash 396095276, now seen corresponding path program 6 times [2024-06-27 23:31:08,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:08,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475638674] [2024-06-27 23:31:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:10,090 INFO 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 23:31:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:10,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475638674] [2024-06-27 23:31:10,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475638674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:10,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481781096] [2024-06-27 23:31:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:10,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:10,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 230 transitions, 2529 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:10,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:10,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:10,528 INFO L124 PetriNetUnfolderBase]: 573/1026 cut-off events. [2024-06-27 23:31:10,528 INFO L125 PetriNetUnfolderBase]: For 102695/102695 co-relation queries the response was YES. [2024-06-27 23:31:10,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1026 events. 573/1026 cut-off events. For 102695/102695 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5307 event pairs, 76 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 8146. Up to 930 conditions per place. [2024-06-27 23:31:10,538 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 203 selfloop transitions, 37 changer transitions 0/242 dead transitions. [2024-06-27 23:31:10,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 242 transitions, 3107 flow [2024-06-27 23:31:10,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:31:10,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:31:10,540 INFO L175 Difference]: Start difference. First operand has 275 places, 230 transitions, 2529 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:31:10,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 242 transitions, 3107 flow [2024-06-27 23:31:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 242 transitions, 3031 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:10,915 INFO L231 Difference]: Finished difference. Result has 277 places, 231 transitions, 2578 flow [2024-06-27 23:31:10,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2578, PETRI_PLACES=277, PETRI_TRANSITIONS=231} [2024-06-27 23:31:10,916 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-27 23:31:10,916 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 231 transitions, 2578 flow [2024-06-27 23:31:10,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:10,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:10,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:10,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:31:10,917 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:10,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -299199589, now seen corresponding path program 2 times [2024-06-27 23:31:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597661037] [2024-06-27 23:31:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:10,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:12,204 INFO 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 23:31:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597661037] [2024-06-27 23:31:12,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597661037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:12,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:12,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068086286] [2024-06-27 23:31:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:12,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:12,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 231 transitions, 2578 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:12,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:12,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:12,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:12,598 INFO L124 PetriNetUnfolderBase]: 579/1036 cut-off events. [2024-06-27 23:31:12,598 INFO L125 PetriNetUnfolderBase]: For 104610/104610 co-relation queries the response was YES. [2024-06-27 23:31:12,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 1036 events. 579/1036 cut-off events. For 104610/104610 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5344 event pairs, 71 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 8258. Up to 881 conditions per place. [2024-06-27 23:31:12,609 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 187 selfloop transitions, 57 changer transitions 0/246 dead transitions. [2024-06-27 23:31:12,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 246 transitions, 3220 flow [2024-06-27 23:31:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:31:12,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:31:12,611 INFO L175 Difference]: Start difference. First operand has 277 places, 231 transitions, 2578 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:31:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 246 transitions, 3220 flow [2024-06-27 23:31:12,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 246 transitions, 3107 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:12,992 INFO L231 Difference]: Finished difference. Result has 278 places, 233 transitions, 2647 flow [2024-06-27 23:31:12,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2647, PETRI_PLACES=278, PETRI_TRANSITIONS=233} [2024-06-27 23:31:12,993 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 249 predicate places. [2024-06-27 23:31:12,993 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 233 transitions, 2647 flow [2024-06-27 23:31:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:12,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:12,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:31:12,994 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:12,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -175363250, now seen corresponding path program 7 times [2024-06-27 23:31:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213711497] [2024-06-27 23:31:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:14,125 INFO 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 23:31:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213711497] [2024-06-27 23:31:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213711497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:14,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:14,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987703833] [2024-06-27 23:31:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:14,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:14,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:14,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 233 transitions, 2647 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:14,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:14,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:14,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:14,620 INFO L124 PetriNetUnfolderBase]: 583/1044 cut-off events. [2024-06-27 23:31:14,621 INFO L125 PetriNetUnfolderBase]: For 107657/107657 co-relation queries the response was YES. [2024-06-27 23:31:14,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8521 conditions, 1044 events. 583/1044 cut-off events. For 107657/107657 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5404 event pairs, 76 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 8395. Up to 951 conditions per place. [2024-06-27 23:31:14,631 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 209 selfloop transitions, 34 changer transitions 0/245 dead transitions. [2024-06-27 23:31:14,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 245 transitions, 3205 flow [2024-06-27 23:31:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:31:14,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:31:14,632 INFO L175 Difference]: Start difference. First operand has 278 places, 233 transitions, 2647 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:31:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 245 transitions, 3205 flow [2024-06-27 23:31:15,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 245 transitions, 3057 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:15,031 INFO L231 Difference]: Finished difference. Result has 281 places, 234 transitions, 2619 flow [2024-06-27 23:31:15,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2499, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2619, PETRI_PLACES=281, PETRI_TRANSITIONS=234} [2024-06-27 23:31:15,031 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 252 predicate places. [2024-06-27 23:31:15,032 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 234 transitions, 2619 flow [2024-06-27 23:31:15,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:15,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:15,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:15,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:31:15,032 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:15,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:15,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1143296667, now seen corresponding path program 2 times [2024-06-27 23:31:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:15,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057353546] [2024-06-27 23:31:15,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:17,234 INFO 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 23:31:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:17,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057353546] [2024-06-27 23:31:17,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057353546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:17,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:17,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:17,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863063210] [2024-06-27 23:31:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:17,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:17,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:17,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:17,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:17,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 234 transitions, 2619 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:17,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:17,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:17,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:17,668 INFO L124 PetriNetUnfolderBase]: 590/1057 cut-off events. [2024-06-27 23:31:17,668 INFO L125 PetriNetUnfolderBase]: For 109836/109836 co-relation queries the response was YES. [2024-06-27 23:31:17,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 1057 events. 590/1057 cut-off events. For 109836/109836 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5477 event pairs, 134 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 8397. Up to 1023 conditions per place. [2024-06-27 23:31:17,679 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 228 selfloop transitions, 17 changer transitions 0/247 dead transitions. [2024-06-27 23:31:17,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 247 transitions, 3174 flow [2024-06-27 23:31:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 23:31:17,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-27 23:31:17,680 INFO L175 Difference]: Start difference. First operand has 281 places, 234 transitions, 2619 flow. Second operand 10 states and 95 transitions. [2024-06-27 23:31:17,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 247 transitions, 3174 flow [2024-06-27 23:31:18,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 247 transitions, 3064 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:18,110 INFO L231 Difference]: Finished difference. Result has 285 places, 237 transitions, 2599 flow [2024-06-27 23:31:18,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2599, PETRI_PLACES=285, PETRI_TRANSITIONS=237} [2024-06-27 23:31:18,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-27 23:31:18,111 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 237 transitions, 2599 flow [2024-06-27 23:31:18,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:18,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:18,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:18,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:31:18,111 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:18,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -700867092, now seen corresponding path program 3 times [2024-06-27 23:31:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776392807] [2024-06-27 23:31:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:18,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776392807] [2024-06-27 23:31:19,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776392807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:19,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:19,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:19,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050542847] [2024-06-27 23:31:19,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:19,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:19,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 237 transitions, 2599 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:19,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:19,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:19,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:20,306 INFO L124 PetriNetUnfolderBase]: 591/1059 cut-off events. [2024-06-27 23:31:20,306 INFO L125 PetriNetUnfolderBase]: For 107365/107365 co-relation queries the response was YES. [2024-06-27 23:31:20,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8372 conditions, 1059 events. 591/1059 cut-off events. For 107365/107365 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5505 event pairs, 134 based on Foata normal form. 2/1060 useless extension candidates. Maximal degree in co-relation 8242. Up to 998 conditions per place. [2024-06-27 23:31:20,317 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 221 selfloop transitions, 27 changer transitions 0/250 dead transitions. [2024-06-27 23:31:20,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 250 transitions, 3349 flow [2024-06-27 23:31:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 23:31:20,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666666666666667 [2024-06-27 23:31:20,318 INFO L175 Difference]: Start difference. First operand has 285 places, 237 transitions, 2599 flow. Second operand 10 states and 101 transitions. [2024-06-27 23:31:20,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 250 transitions, 3349 flow [2024-06-27 23:31:20,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 250 transitions, 3293 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:20,724 INFO L231 Difference]: Finished difference. Result has 288 places, 239 transitions, 2632 flow [2024-06-27 23:31:20,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=288, PETRI_TRANSITIONS=239} [2024-06-27 23:31:20,724 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 259 predicate places. [2024-06-27 23:31:20,725 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 239 transitions, 2632 flow [2024-06-27 23:31:20,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:20,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:20,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:20,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:31:20,725 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:20,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1143288731, now seen corresponding path program 3 times [2024-06-27 23:31:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322378039] [2024-06-27 23:31:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:20,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:22,154 INFO 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 23:31:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322378039] [2024-06-27 23:31:22,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322378039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299160670] [2024-06-27 23:31:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:22,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:22,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:22,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 239 transitions, 2632 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:22,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:22,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:22,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:22,613 INFO L124 PetriNetUnfolderBase]: 587/1053 cut-off events. [2024-06-27 23:31:22,613 INFO L125 PetriNetUnfolderBase]: For 103028/103028 co-relation queries the response was YES. [2024-06-27 23:31:22,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 1053 events. 587/1053 cut-off events. For 103028/103028 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5483 event pairs, 131 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 8044. Up to 995 conditions per place. [2024-06-27 23:31:22,623 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 220 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-27 23:31:22,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 249 transitions, 3350 flow [2024-06-27 23:31:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:31:22,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:31:22,633 INFO L175 Difference]: Start difference. First operand has 288 places, 239 transitions, 2632 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:31:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 249 transitions, 3350 flow [2024-06-27 23:31:23,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 249 transitions, 3256 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:23,037 INFO L231 Difference]: Finished difference. Result has 289 places, 239 transitions, 2602 flow [2024-06-27 23:31:23,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2602, PETRI_PLACES=289, PETRI_TRANSITIONS=239} [2024-06-27 23:31:23,038 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-27 23:31:23,038 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 239 transitions, 2602 flow [2024-06-27 23:31:23,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:23,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:23,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:31:23,039 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:23,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1152493437, now seen corresponding path program 3 times [2024-06-27 23:31:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134995393] [2024-06-27 23:31:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:23,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:24,781 INFO 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 23:31:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134995393] [2024-06-27 23:31:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134995393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:24,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:24,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:24,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124585066] [2024-06-27 23:31:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:24,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:24,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:24,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 239 transitions, 2602 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:24,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:24,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:24,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:25,532 INFO L124 PetriNetUnfolderBase]: 591/1061 cut-off events. [2024-06-27 23:31:25,532 INFO L125 PetriNetUnfolderBase]: For 105256/105256 co-relation queries the response was YES. [2024-06-27 23:31:25,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 1061 events. 591/1061 cut-off events. For 105256/105256 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5537 event pairs, 131 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 8081. Up to 1021 conditions per place. [2024-06-27 23:31:25,544 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 229 selfloop transitions, 21 changer transitions 0/252 dead transitions. [2024-06-27 23:31:25,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 252 transitions, 3154 flow [2024-06-27 23:31:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:31:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:31:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 23:31:25,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-27 23:31:25,545 INFO L175 Difference]: Start difference. First operand has 289 places, 239 transitions, 2602 flow. Second operand 12 states and 111 transitions. [2024-06-27 23:31:25,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 252 transitions, 3154 flow [2024-06-27 23:31:25,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 252 transitions, 3102 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:25,993 INFO L231 Difference]: Finished difference. Result has 294 places, 240 transitions, 2624 flow [2024-06-27 23:31:25,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2624, PETRI_PLACES=294, PETRI_TRANSITIONS=240} [2024-06-27 23:31:25,994 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2024-06-27 23:31:25,994 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 240 transitions, 2624 flow [2024-06-27 23:31:25,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:25,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:25,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:31:25,995 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:25,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1883179916, now seen corresponding path program 4 times [2024-06-27 23:31:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165922657] [2024-06-27 23:31:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:27,289 INFO 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 23:31:27,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:27,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165922657] [2024-06-27 23:31:27,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165922657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748234008] [2024-06-27 23:31:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:27,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:27,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:27,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:27,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 240 transitions, 2624 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:27,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:27,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:27,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:27,797 INFO L124 PetriNetUnfolderBase]: 597/1072 cut-off events. [2024-06-27 23:31:27,797 INFO L125 PetriNetUnfolderBase]: For 107920/107920 co-relation queries the response was YES. [2024-06-27 23:31:27,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 1072 events. 597/1072 cut-off events. For 107920/107920 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5615 event pairs, 96 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 8187. Up to 981 conditions per place. [2024-06-27 23:31:27,810 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 222 selfloop transitions, 30 changer transitions 0/255 dead transitions. [2024-06-27 23:31:27,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 255 transitions, 3450 flow [2024-06-27 23:31:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:31:27,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:31:27,811 INFO L175 Difference]: Start difference. First operand has 294 places, 240 transitions, 2624 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:31:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 255 transitions, 3450 flow [2024-06-27 23:31:28,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 255 transitions, 3367 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-27 23:31:28,295 INFO L231 Difference]: Finished difference. Result has 291 places, 242 transitions, 2638 flow [2024-06-27 23:31:28,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2638, PETRI_PLACES=291, PETRI_TRANSITIONS=242} [2024-06-27 23:31:28,296 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 262 predicate places. [2024-06-27 23:31:28,296 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 242 transitions, 2638 flow [2024-06-27 23:31:28,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:28,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:28,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:28,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:31:28,296 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:28,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1883172197, now seen corresponding path program 4 times [2024-06-27 23:31:28,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:28,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383132658] [2024-06-27 23:31:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383132658] [2024-06-27 23:31:30,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383132658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:30,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:30,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:30,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978433933] [2024-06-27 23:31:30,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:30,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:30,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:30,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 242 transitions, 2638 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:30,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:30,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:30,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:30,514 INFO L124 PetriNetUnfolderBase]: 601/1080 cut-off events. [2024-06-27 23:31:30,515 INFO L125 PetriNetUnfolderBase]: For 110251/110251 co-relation queries the response was YES. [2024-06-27 23:31:30,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8381 conditions, 1080 events. 601/1080 cut-off events. For 110251/110251 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5667 event pairs, 103 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 8251. Up to 1028 conditions per place. [2024-06-27 23:31:30,526 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 228 selfloop transitions, 22 changer transitions 0/253 dead transitions. [2024-06-27 23:31:30,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 253 transitions, 3188 flow [2024-06-27 23:31:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:31:30,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:31:30,527 INFO L175 Difference]: Start difference. First operand has 291 places, 242 transitions, 2638 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:31:30,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 253 transitions, 3188 flow [2024-06-27 23:31:31,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 253 transitions, 3106 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:31,016 INFO L231 Difference]: Finished difference. Result has 293 places, 243 transitions, 2634 flow [2024-06-27 23:31:31,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2634, PETRI_PLACES=293, PETRI_TRANSITIONS=243} [2024-06-27 23:31:31,017 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 264 predicate places. [2024-06-27 23:31:31,017 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 243 transitions, 2634 flow [2024-06-27 23:31:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:31,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:31,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:31,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:31:31,018 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:31,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1693301221, now seen corresponding path program 5 times [2024-06-27 23:31:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057774152] [2024-06-27 23:31:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:31,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:33,399 INFO 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 23:31:33,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:33,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057774152] [2024-06-27 23:31:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057774152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:33,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680298348] [2024-06-27 23:31:33,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:33,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:33,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 243 transitions, 2634 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:33,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:33,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:33,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:34,141 INFO L124 PetriNetUnfolderBase]: 605/1087 cut-off events. [2024-06-27 23:31:34,141 INFO L125 PetriNetUnfolderBase]: For 112634/112634 co-relation queries the response was YES. [2024-06-27 23:31:34,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8426 conditions, 1087 events. 605/1087 cut-off events. For 112634/112634 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5676 event pairs, 133 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 8294. Up to 1027 conditions per place. [2024-06-27 23:31:34,154 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 231 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-27 23:31:34,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 257 transitions, 3202 flow [2024-06-27 23:31:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:31:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:31:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 23:31:34,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-27 23:31:34,155 INFO L175 Difference]: Start difference. First operand has 293 places, 243 transitions, 2634 flow. Second operand 12 states and 111 transitions. [2024-06-27 23:31:34,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 257 transitions, 3202 flow [2024-06-27 23:31:34,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 257 transitions, 3134 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:34,686 INFO L231 Difference]: Finished difference. Result has 298 places, 244 transitions, 2650 flow [2024-06-27 23:31:34,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2650, PETRI_PLACES=298, PETRI_TRANSITIONS=244} [2024-06-27 23:31:34,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2024-06-27 23:31:34,687 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 244 transitions, 2650 flow [2024-06-27 23:31:34,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:34,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:34,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:34,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:31:34,688 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:34,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1427269792, now seen corresponding path program 5 times [2024-06-27 23:31:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:34,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248892559] [2024-06-27 23:31:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:34,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:36,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:36,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248892559] [2024-06-27 23:31:36,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248892559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:36,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184099067] [2024-06-27 23:31:36,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:36,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:36,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:36,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 244 transitions, 2650 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:36,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:36,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:36,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:37,346 INFO L124 PetriNetUnfolderBase]: 611/1098 cut-off events. [2024-06-27 23:31:37,347 INFO L125 PetriNetUnfolderBase]: For 114995/114995 co-relation queries the response was YES. [2024-06-27 23:31:37,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8512 conditions, 1098 events. 611/1098 cut-off events. For 114995/114995 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5791 event pairs, 97 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 8378. Up to 845 conditions per place. [2024-06-27 23:31:37,359 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 199 selfloop transitions, 62 changer transitions 0/263 dead transitions. [2024-06-27 23:31:37,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 263 transitions, 3934 flow [2024-06-27 23:31:37,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:31:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:31:37,360 INFO L175 Difference]: Start difference. First operand has 298 places, 244 transitions, 2650 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:31:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 263 transitions, 3934 flow [2024-06-27 23:31:37,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 263 transitions, 3860 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 23:31:37,885 INFO L231 Difference]: Finished difference. Result has 297 places, 246 transitions, 2739 flow [2024-06-27 23:31:37,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2739, PETRI_PLACES=297, PETRI_TRANSITIONS=246} [2024-06-27 23:31:37,885 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 268 predicate places. [2024-06-27 23:31:37,885 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 246 transitions, 2739 flow [2024-06-27 23:31:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:37,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:37,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:31:37,886 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:37,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1427277511, now seen corresponding path program 6 times [2024-06-27 23:31:37,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166624045] [2024-06-27 23:31:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:39,835 INFO 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 23:31:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166624045] [2024-06-27 23:31:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166624045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:39,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:39,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439728286] [2024-06-27 23:31:39,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:39,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:39,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 246 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:39,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:39,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:39,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:40,291 INFO L124 PetriNetUnfolderBase]: 608/1093 cut-off events. [2024-06-27 23:31:40,292 INFO L125 PetriNetUnfolderBase]: For 108692/108692 co-relation queries the response was YES. [2024-06-27 23:31:40,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8371 conditions, 1093 events. 608/1093 cut-off events. For 108692/108692 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5760 event pairs, 104 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 8237. Up to 1000 conditions per place. [2024-06-27 23:31:40,306 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 215 selfloop transitions, 39 changer transitions 0/256 dead transitions. [2024-06-27 23:31:40,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 256 transitions, 3269 flow [2024-06-27 23:31:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:40,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:31:40,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:31:40,307 INFO L175 Difference]: Start difference. First operand has 297 places, 246 transitions, 2739 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:31:40,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 256 transitions, 3269 flow [2024-06-27 23:31:40,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 256 transitions, 3123 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:40,799 INFO L231 Difference]: Finished difference. Result has 299 places, 246 transitions, 2675 flow [2024-06-27 23:31:40,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2675, PETRI_PLACES=299, PETRI_TRANSITIONS=246} [2024-06-27 23:31:40,800 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-06-27 23:31:40,800 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 246 transitions, 2675 flow [2024-06-27 23:31:40,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:40,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:40,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:31:40,801 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:40,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:40,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1106431808, now seen corresponding path program 8 times [2024-06-27 23:31:40,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723112073] [2024-06-27 23:31:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:42,268 INFO 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 23:31:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:42,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723112073] [2024-06-27 23:31:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723112073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:42,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221788657] [2024-06-27 23:31:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:42,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:42,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:42,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 246 transitions, 2675 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:42,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:42,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:42,699 INFO L124 PetriNetUnfolderBase]: 612/1101 cut-off events. [2024-06-27 23:31:42,700 INFO L125 PetriNetUnfolderBase]: For 111592/111592 co-relation queries the response was YES. [2024-06-27 23:31:42,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8391 conditions, 1101 events. 612/1101 cut-off events. For 111592/111592 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5833 event pairs, 104 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 8256. Up to 1019 conditions per place. [2024-06-27 23:31:42,712 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 217 selfloop transitions, 37 changer transitions 0/256 dead transitions. [2024-06-27 23:31:42,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 256 transitions, 3251 flow [2024-06-27 23:31:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:31:42,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:31:42,714 INFO L175 Difference]: Start difference. First operand has 299 places, 246 transitions, 2675 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:31:42,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 256 transitions, 3251 flow [2024-06-27 23:31:43,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 256 transitions, 3101 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:43,308 INFO L231 Difference]: Finished difference. Result has 299 places, 247 transitions, 2653 flow [2024-06-27 23:31:43,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2653, PETRI_PLACES=299, PETRI_TRANSITIONS=247} [2024-06-27 23:31:43,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-06-27 23:31:43,309 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 247 transitions, 2653 flow [2024-06-27 23:31:43,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:43,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:43,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:43,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:31:43,310 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:43,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1427067982, now seen corresponding path program 6 times [2024-06-27 23:31:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130788951] [2024-06-27 23:31:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:45,023 INFO 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 23:31:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:45,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130788951] [2024-06-27 23:31:45,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130788951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:45,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:45,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:45,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791237231] [2024-06-27 23:31:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:45,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:45,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:45,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:45,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 247 transitions, 2653 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:45,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:45,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:45,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:45,659 INFO L124 PetriNetUnfolderBase]: 608/1095 cut-off events. [2024-06-27 23:31:45,659 INFO L125 PetriNetUnfolderBase]: For 104220/104220 co-relation queries the response was YES. [2024-06-27 23:31:45,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8081 conditions, 1095 events. 608/1095 cut-off events. For 104220/104220 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5810 event pairs, 99 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 7945. Up to 845 conditions per place. [2024-06-27 23:31:45,670 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 193 selfloop transitions, 68 changer transitions 0/263 dead transitions. [2024-06-27 23:31:45,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 263 transitions, 3729 flow [2024-06-27 23:31:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:31:45,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 23:31:45,672 INFO L175 Difference]: Start difference. First operand has 299 places, 247 transitions, 2653 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:31:45,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 263 transitions, 3729 flow [2024-06-27 23:31:46,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 3560 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:46,250 INFO L231 Difference]: Finished difference. Result has 299 places, 247 transitions, 2625 flow [2024-06-27 23:31:46,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2625, PETRI_PLACES=299, PETRI_TRANSITIONS=247} [2024-06-27 23:31:46,250 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-06-27 23:31:46,251 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 247 transitions, 2625 flow [2024-06-27 23:31:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:31:46,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:46,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:46,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:31:46,251 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:46,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1348268704, now seen corresponding path program 9 times [2024-06-27 23:31:46,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500559120] [2024-06-27 23:31:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:46,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:47,606 INFO 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 23:31:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500559120] [2024-06-27 23:31:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500559120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:47,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277048925] [2024-06-27 23:31:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:47,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:47,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:47,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 247 transitions, 2625 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:47,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:47,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:47,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:47,993 INFO L124 PetriNetUnfolderBase]: 612/1103 cut-off events. [2024-06-27 23:31:47,993 INFO L125 PetriNetUnfolderBase]: For 106040/106040 co-relation queries the response was YES. [2024-06-27 23:31:48,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8127 conditions, 1103 events. 612/1103 cut-off events. For 106040/106040 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5859 event pairs, 87 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7993. Up to 967 conditions per place. [2024-06-27 23:31:48,004 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 198 selfloop transitions, 57 changer transitions 0/257 dead transitions. [2024-06-27 23:31:48,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 257 transitions, 3203 flow [2024-06-27 23:31:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:31:48,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:31:48,005 INFO L175 Difference]: Start difference. First operand has 299 places, 247 transitions, 2625 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:31:48,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 257 transitions, 3203 flow [2024-06-27 23:31:48,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 257 transitions, 3035 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:48,585 INFO L231 Difference]: Finished difference. Result has 299 places, 248 transitions, 2625 flow [2024-06-27 23:31:48,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2625, PETRI_PLACES=299, PETRI_TRANSITIONS=248} [2024-06-27 23:31:48,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2024-06-27 23:31:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 248 transitions, 2625 flow [2024-06-27 23:31:48,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:48,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:48,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:31:48,586 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:48,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1883381726, now seen corresponding path program 7 times [2024-06-27 23:31:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385448217] [2024-06-27 23:31:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:49,923 INFO 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 23:31:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385448217] [2024-06-27 23:31:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385448217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:49,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317421972] [2024-06-27 23:31:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:49,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:50,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:50,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 248 transitions, 2625 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:50,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:50,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:50,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:50,385 INFO L124 PetriNetUnfolderBase]: 608/1097 cut-off events. [2024-06-27 23:31:50,385 INFO L125 PetriNetUnfolderBase]: For 98718/98718 co-relation queries the response was YES. [2024-06-27 23:31:50,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 1097 events. 608/1097 cut-off events. For 98718/98718 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5861 event pairs, 100 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 7699. Up to 1009 conditions per place. [2024-06-27 23:31:50,397 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 227 selfloop transitions, 31 changer transitions 0/261 dead transitions. [2024-06-27 23:31:50,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 261 transitions, 3281 flow [2024-06-27 23:31:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:31:50,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:31:50,398 INFO L175 Difference]: Start difference. First operand has 299 places, 248 transitions, 2625 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:31:50,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 261 transitions, 3281 flow [2024-06-27 23:31:50,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 261 transitions, 3103 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:50,940 INFO L231 Difference]: Finished difference. Result has 301 places, 248 transitions, 2514 flow [2024-06-27 23:31:50,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2514, PETRI_PLACES=301, PETRI_TRANSITIONS=248} [2024-06-27 23:31:50,941 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 272 predicate places. [2024-06-27 23:31:50,941 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 248 transitions, 2514 flow [2024-06-27 23:31:50,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:50,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:50,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:31:50,942 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:50,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1888897928, now seen corresponding path program 10 times [2024-06-27 23:31:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:50,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245537384] [2024-06-27 23:31:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:52,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245537384] [2024-06-27 23:31:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245537384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:52,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:52,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617781103] [2024-06-27 23:31:52,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:52,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:52,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:52,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 248 transitions, 2514 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:31:52,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:52,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:52,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:52,748 INFO L124 PetriNetUnfolderBase]: 612/1105 cut-off events. [2024-06-27 23:31:52,748 INFO L125 PetriNetUnfolderBase]: For 100212/100212 co-relation queries the response was YES. [2024-06-27 23:31:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 1105 events. 612/1105 cut-off events. For 100212/100212 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5889 event pairs, 86 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 7676. Up to 969 conditions per place. [2024-06-27 23:31:52,758 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 202 selfloop transitions, 55 changer transitions 0/259 dead transitions. [2024-06-27 23:31:52,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 259 transitions, 3100 flow [2024-06-27 23:31:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:52,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:31:52,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:31:52,762 INFO L175 Difference]: Start difference. First operand has 301 places, 248 transitions, 2514 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:31:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 259 transitions, 3100 flow [2024-06-27 23:31:53,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 259 transitions, 3002 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:31:53,246 INFO L231 Difference]: Finished difference. Result has 300 places, 249 transitions, 2582 flow [2024-06-27 23:31:53,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2582, PETRI_PLACES=300, PETRI_TRANSITIONS=249} [2024-06-27 23:31:53,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 271 predicate places. [2024-06-27 23:31:53,247 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 249 transitions, 2582 flow [2024-06-27 23:31:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 23:31:53,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:53,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:53,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:31:53,247 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:53,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1342906324, now seen corresponding path program 11 times [2024-06-27 23:31:53,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803471746] [2024-06-27 23:31:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:54,669 INFO 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 23:31:54,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803471746] [2024-06-27 23:31:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803471746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:54,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264806638] [2024-06-27 23:31:54,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:54,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:54,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:54,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:54,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 249 transitions, 2582 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:54,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:54,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:54,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:55,101 INFO L124 PetriNetUnfolderBase]: 616/1113 cut-off events. [2024-06-27 23:31:55,101 INFO L125 PetriNetUnfolderBase]: For 103672/103672 co-relation queries the response was YES. [2024-06-27 23:31:55,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 1113 events. 616/1113 cut-off events. For 103672/103672 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5966 event pairs, 106 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 7813. Up to 1061 conditions per place. [2024-06-27 23:31:55,113 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 233 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-27 23:31:55,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 259 transitions, 3168 flow [2024-06-27 23:31:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-27 23:31:55,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-27 23:31:55,114 INFO L175 Difference]: Start difference. First operand has 300 places, 249 transitions, 2582 flow. Second operand 9 states and 91 transitions. [2024-06-27 23:31:55,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 259 transitions, 3168 flow [2024-06-27 23:31:55,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 259 transitions, 3012 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:55,762 INFO L231 Difference]: Finished difference. Result has 302 places, 250 transitions, 2532 flow [2024-06-27 23:31:55,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2532, PETRI_PLACES=302, PETRI_TRANSITIONS=250} [2024-06-27 23:31:55,762 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2024-06-27 23:31:55,762 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 250 transitions, 2532 flow [2024-06-27 23:31:55,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:55,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:55,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:55,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:31:55,763 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:55,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 549543514, now seen corresponding path program 12 times [2024-06-27 23:31:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5411128] [2024-06-27 23:31:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:56,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5411128] [2024-06-27 23:31:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5411128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:56,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65629065] [2024-06-27 23:31:56,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:57,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:57,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 250 transitions, 2532 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:57,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:57,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:57,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:57,377 INFO L124 PetriNetUnfolderBase]: 620/1120 cut-off events. [2024-06-27 23:31:57,378 INFO L125 PetriNetUnfolderBase]: For 105050/105050 co-relation queries the response was YES. [2024-06-27 23:31:57,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7941 conditions, 1120 events. 620/1120 cut-off events. For 105050/105050 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5995 event pairs, 75 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 7803. Up to 1033 conditions per place. [2024-06-27 23:31:57,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 241 selfloop transitions, 25 changer transitions 0/268 dead transitions. [2024-06-27 23:31:57,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 268 transitions, 3162 flow [2024-06-27 23:31:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:31:57,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:31:57,391 INFO L175 Difference]: Start difference. First operand has 302 places, 250 transitions, 2532 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:31:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 268 transitions, 3162 flow [2024-06-27 23:31:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 268 transitions, 3066 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:57,913 INFO L231 Difference]: Finished difference. Result has 304 places, 251 transitions, 2546 flow [2024-06-27 23:31:57,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2546, PETRI_PLACES=304, PETRI_TRANSITIONS=251} [2024-06-27 23:31:57,913 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 275 predicate places. [2024-06-27 23:31:57,913 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 251 transitions, 2546 flow [2024-06-27 23:31:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:57,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:57,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:31:57,914 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:57,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1338290786, now seen corresponding path program 13 times [2024-06-27 23:31:57,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641365684] [2024-06-27 23:31:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:59,048 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 23:31:59,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:59,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641365684] [2024-06-27 23:31:59,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641365684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:59,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:59,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682597469] [2024-06-27 23:31:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:59,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:59,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:31:59,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 251 transitions, 2546 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:31:59,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:59,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:31:59,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:59,455 INFO L124 PetriNetUnfolderBase]: 624/1129 cut-off events. [2024-06-27 23:31:59,456 INFO L125 PetriNetUnfolderBase]: For 107267/107267 co-relation queries the response was YES. [2024-06-27 23:31:59,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8006 conditions, 1129 events. 624/1129 cut-off events. For 107267/107267 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6065 event pairs, 94 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 7868. Up to 1019 conditions per place. [2024-06-27 23:31:59,467 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 239 selfloop transitions, 29 changer transitions 0/270 dead transitions. [2024-06-27 23:31:59,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 270 transitions, 3184 flow [2024-06-27 23:31:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:31:59,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 23:31:59,468 INFO L175 Difference]: Start difference. First operand has 304 places, 251 transitions, 2546 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:31:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 270 transitions, 3184 flow [2024-06-27 23:32:00,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 3084 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:00,030 INFO L231 Difference]: Finished difference. Result has 307 places, 252 transitions, 2567 flow [2024-06-27 23:32:00,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2567, PETRI_PLACES=307, PETRI_TRANSITIONS=252} [2024-06-27 23:32:00,031 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 278 predicate places. [2024-06-27 23:32:00,031 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 252 transitions, 2567 flow [2024-06-27 23:32:00,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:00,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:00,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:00,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:32:00,031 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:00,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -314437310, now seen corresponding path program 14 times [2024-06-27 23:32:00,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:00,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845879219] [2024-06-27 23:32:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:01,080 INFO 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 23:32:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845879219] [2024-06-27 23:32:01,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845879219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:01,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:01,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:01,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363961258] [2024-06-27 23:32:01,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:01,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:01,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 252 transitions, 2567 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:01,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:01,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:01,513 INFO L124 PetriNetUnfolderBase]: 575/1081 cut-off events. [2024-06-27 23:32:01,514 INFO L125 PetriNetUnfolderBase]: For 122147/122152 co-relation queries the response was YES. [2024-06-27 23:32:01,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7721 conditions, 1081 events. 575/1081 cut-off events. For 122147/122152 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6098 event pairs, 57 based on Foata normal form. 6/1080 useless extension candidates. Maximal degree in co-relation 7581. Up to 702 conditions per place. [2024-06-27 23:32:01,524 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 147 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-27 23:32:01,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 268 transitions, 3033 flow [2024-06-27 23:32:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:32:01,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 23:32:01,526 INFO L175 Difference]: Start difference. First operand has 307 places, 252 transitions, 2567 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:32:01,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 268 transitions, 3033 flow [2024-06-27 23:32:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 268 transitions, 2924 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:02,092 INFO L231 Difference]: Finished difference. Result has 308 places, 253 transitions, 2611 flow [2024-06-27 23:32:02,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2611, PETRI_PLACES=308, PETRI_TRANSITIONS=253} [2024-06-27 23:32:02,093 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 279 predicate places. [2024-06-27 23:32:02,093 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 253 transitions, 2611 flow [2024-06-27 23:32:02,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:02,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:02,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:02,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:32:02,094 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:02,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1047265020, now seen corresponding path program 15 times [2024-06-27 23:32:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950407280] [2024-06-27 23:32:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:03,402 INFO 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 23:32:03,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:03,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950407280] [2024-06-27 23:32:03,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950407280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:03,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:03,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:03,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830427958] [2024-06-27 23:32:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:03,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:03,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 253 transitions, 2611 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:03,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:03,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:03,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:03,853 INFO L124 PetriNetUnfolderBase]: 632/1145 cut-off events. [2024-06-27 23:32:03,853 INFO L125 PetriNetUnfolderBase]: For 112055/112055 co-relation queries the response was YES. [2024-06-27 23:32:03,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8175 conditions, 1145 events. 632/1145 cut-off events. For 112055/112055 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6157 event pairs, 89 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 8034. Up to 1060 conditions per place. [2024-06-27 23:32:03,866 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 232 selfloop transitions, 35 changer transitions 0/269 dead transitions. [2024-06-27 23:32:03,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 269 transitions, 3243 flow [2024-06-27 23:32:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:32:03,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:32:03,868 INFO L175 Difference]: Start difference. First operand has 308 places, 253 transitions, 2611 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:32:03,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 269 transitions, 3243 flow [2024-06-27 23:32:04,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 269 transitions, 3162 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 23:32:04,478 INFO L231 Difference]: Finished difference. Result has 313 places, 254 transitions, 2667 flow [2024-06-27 23:32:04,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2667, PETRI_PLACES=313, PETRI_TRANSITIONS=254} [2024-06-27 23:32:04,479 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-06-27 23:32:04,479 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 254 transitions, 2667 flow [2024-06-27 23:32:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:04,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:04,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:04,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:32:04,480 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:04,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1336412961, now seen corresponding path program 4 times [2024-06-27 23:32:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:04,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719664226] [2024-06-27 23:32:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:05,903 INFO 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 23:32:05,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:05,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719664226] [2024-06-27 23:32:05,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719664226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:05,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:05,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:05,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833685949] [2024-06-27 23:32:05,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:05,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:05,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:05,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:05,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 254 transitions, 2667 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:32:05,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:05,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:05,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:06,382 INFO L124 PetriNetUnfolderBase]: 628/1138 cut-off events. [2024-06-27 23:32:06,383 INFO L125 PetriNetUnfolderBase]: For 100096/100096 co-relation queries the response was YES. [2024-06-27 23:32:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1138 events. 628/1138 cut-off events. For 100096/100096 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6161 event pairs, 94 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 7708. Up to 959 conditions per place. [2024-06-27 23:32:06,394 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 207 selfloop transitions, 62 changer transitions 0/271 dead transitions. [2024-06-27 23:32:06,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 271 transitions, 3369 flow [2024-06-27 23:32:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:32:06,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:32:06,396 INFO L175 Difference]: Start difference. First operand has 313 places, 254 transitions, 2667 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:32:06,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 271 transitions, 3369 flow [2024-06-27 23:32:06,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 271 transitions, 3249 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:06,935 INFO L231 Difference]: Finished difference. Result has 315 places, 256 transitions, 2752 flow [2024-06-27 23:32:06,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2752, PETRI_PLACES=315, PETRI_TRANSITIONS=256} [2024-06-27 23:32:06,935 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 286 predicate places. [2024-06-27 23:32:06,935 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 256 transitions, 2752 flow [2024-06-27 23:32:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 23:32:06,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:06,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:06,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:32:06,936 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:06,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1047520770, now seen corresponding path program 16 times [2024-06-27 23:32:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:06,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382290494] [2024-06-27 23:32:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:08,028 INFO 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 23:32:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382290494] [2024-06-27 23:32:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382290494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:08,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761045893] [2024-06-27 23:32:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:08,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:08,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 256 transitions, 2752 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:08,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:08,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:08,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:08,459 INFO L124 PetriNetUnfolderBase]: 632/1147 cut-off events. [2024-06-27 23:32:08,459 INFO L125 PetriNetUnfolderBase]: For 102431/102431 co-relation queries the response was YES. [2024-06-27 23:32:08,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7995 conditions, 1147 events. 632/1147 cut-off events. For 102431/102431 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6229 event pairs, 89 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 7853. Up to 1065 conditions per place. [2024-06-27 23:32:08,470 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 240 selfloop transitions, 31 changer transitions 0/273 dead transitions. [2024-06-27 23:32:08,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 3394 flow [2024-06-27 23:32:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:32:08,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:32:08,472 INFO L175 Difference]: Start difference. First operand has 315 places, 256 transitions, 2752 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:32:08,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 3394 flow [2024-06-27 23:32:09,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 273 transitions, 3239 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:09,006 INFO L231 Difference]: Finished difference. Result has 318 places, 257 transitions, 2725 flow [2024-06-27 23:32:09,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2725, PETRI_PLACES=318, PETRI_TRANSITIONS=257} [2024-06-27 23:32:09,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2024-06-27 23:32:09,007 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 257 transitions, 2725 flow [2024-06-27 23:32:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:09,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:09,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:32:09,008 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:09,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1410456674, now seen corresponding path program 17 times [2024-06-27 23:32:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486871461] [2024-06-27 23:32:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:10,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:10,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486871461] [2024-06-27 23:32:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486871461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739533661] [2024-06-27 23:32:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:10,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:10,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:10,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:10,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 257 transitions, 2725 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:10,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:10,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:10,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:10,571 INFO L124 PetriNetUnfolderBase]: 636/1154 cut-off events. [2024-06-27 23:32:10,571 INFO L125 PetriNetUnfolderBase]: For 103838/103838 co-relation queries the response was YES. [2024-06-27 23:32:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8009 conditions, 1154 events. 636/1154 cut-off events. For 103838/103838 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6263 event pairs, 82 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 7866. Up to 1068 conditions per place. [2024-06-27 23:32:10,584 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 242 selfloop transitions, 29 changer transitions 0/273 dead transitions. [2024-06-27 23:32:10,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 273 transitions, 3367 flow [2024-06-27 23:32:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:32:10,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:32:10,585 INFO L175 Difference]: Start difference. First operand has 318 places, 257 transitions, 2725 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:32:10,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 273 transitions, 3367 flow [2024-06-27 23:32:11,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 273 transitions, 3249 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:11,203 INFO L231 Difference]: Finished difference. Result has 320 places, 258 transitions, 2733 flow [2024-06-27 23:32:11,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2733, PETRI_PLACES=320, PETRI_TRANSITIONS=258} [2024-06-27 23:32:11,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2024-06-27 23:32:11,204 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 258 transitions, 2733 flow [2024-06-27 23:32:11,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:11,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:11,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:32:11,205 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1590290654, now seen corresponding path program 18 times [2024-06-27 23:32:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616703709] [2024-06-27 23:32:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616703709] [2024-06-27 23:32:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616703709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:12,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:12,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:12,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523283778] [2024-06-27 23:32:12,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:12,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:12,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:12,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:12,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:12,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 258 transitions, 2733 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:12,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:12,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:12,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:12,888 INFO L124 PetriNetUnfolderBase]: 643/1167 cut-off events. [2024-06-27 23:32:12,888 INFO L125 PetriNetUnfolderBase]: For 106207/106207 co-relation queries the response was YES. [2024-06-27 23:32:12,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8075 conditions, 1167 events. 643/1167 cut-off events. For 106207/106207 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6339 event pairs, 84 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 7931. Up to 1083 conditions per place. [2024-06-27 23:32:12,900 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 241 selfloop transitions, 32 changer transitions 0/275 dead transitions. [2024-06-27 23:32:12,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 275 transitions, 3395 flow [2024-06-27 23:32:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:32:12,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:32:12,901 INFO L175 Difference]: Start difference. First operand has 320 places, 258 transitions, 2733 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:32:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 275 transitions, 3395 flow [2024-06-27 23:32:13,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 275 transitions, 3279 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:13,469 INFO L231 Difference]: Finished difference. Result has 323 places, 261 transitions, 2779 flow [2024-06-27 23:32:13,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2779, PETRI_PLACES=323, PETRI_TRANSITIONS=261} [2024-06-27 23:32:13,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 294 predicate places. [2024-06-27 23:32:13,469 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 261 transitions, 2779 flow [2024-06-27 23:32:13,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:13,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:13,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:13,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:32:13,470 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:13,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1503598844, now seen corresponding path program 19 times [2024-06-27 23:32:13,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:13,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608869687] [2024-06-27 23:32:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:14,663 INFO 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 23:32:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:14,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608869687] [2024-06-27 23:32:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608869687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:14,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:14,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:14,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126864316] [2024-06-27 23:32:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:14,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:14,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 261 transitions, 2779 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:14,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:14,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:14,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:15,128 INFO L124 PetriNetUnfolderBase]: 651/1184 cut-off events. [2024-06-27 23:32:15,129 INFO L125 PetriNetUnfolderBase]: For 110372/110372 co-relation queries the response was YES. [2024-06-27 23:32:15,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8297 conditions, 1184 events. 651/1184 cut-off events. For 110372/110372 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6482 event pairs, 86 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 8151. Up to 1095 conditions per place. [2024-06-27 23:32:15,170 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 241 selfloop transitions, 34 changer transitions 0/277 dead transitions. [2024-06-27 23:32:15,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 277 transitions, 3498 flow [2024-06-27 23:32:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:32:15,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:32:15,173 INFO L175 Difference]: Start difference. First operand has 323 places, 261 transitions, 2779 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:32:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 277 transitions, 3498 flow [2024-06-27 23:32:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 277 transitions, 3307 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:15,763 INFO L231 Difference]: Finished difference. Result has 327 places, 263 transitions, 2799 flow [2024-06-27 23:32:15,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2799, PETRI_PLACES=327, PETRI_TRANSITIONS=263} [2024-06-27 23:32:15,764 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 298 predicate places. [2024-06-27 23:32:15,764 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 263 transitions, 2799 flow [2024-06-27 23:32:15,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:15,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:15,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:15,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:32:15,764 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:15,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1405957118, now seen corresponding path program 20 times [2024-06-27 23:32:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006025449] [2024-06-27 23:32:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:17,014 INFO 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 23:32:17,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006025449] [2024-06-27 23:32:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006025449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:17,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316922044] [2024-06-27 23:32:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:17,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:17,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:17,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:17,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:17,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:17,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 263 transitions, 2799 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:17,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:17,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:17,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:17,482 INFO L124 PetriNetUnfolderBase]: 655/1191 cut-off events. [2024-06-27 23:32:17,482 INFO L125 PetriNetUnfolderBase]: For 110622/110622 co-relation queries the response was YES. [2024-06-27 23:32:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8232 conditions, 1191 events. 655/1191 cut-off events. For 110622/110622 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6519 event pairs, 88 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 8084. Up to 1083 conditions per place. [2024-06-27 23:32:17,495 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 233 selfloop transitions, 43 changer transitions 0/278 dead transitions. [2024-06-27 23:32:17,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 278 transitions, 3481 flow [2024-06-27 23:32:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:32:17,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:32:17,496 INFO L175 Difference]: Start difference. First operand has 327 places, 263 transitions, 2799 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:32:17,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 278 transitions, 3481 flow [2024-06-27 23:32:18,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 278 transitions, 3349 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:18,089 INFO L231 Difference]: Finished difference. Result has 328 places, 264 transitions, 2828 flow [2024-06-27 23:32:18,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2828, PETRI_PLACES=328, PETRI_TRANSITIONS=264} [2024-06-27 23:32:18,090 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 299 predicate places. [2024-06-27 23:32:18,090 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 264 transitions, 2828 flow [2024-06-27 23:32:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:18,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:18,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:32:18,091 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:18,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2075933956, now seen corresponding path program 21 times [2024-06-27 23:32:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646055691] [2024-06-27 23:32:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646055691] [2024-06-27 23:32:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646055691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:19,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:19,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199237710] [2024-06-27 23:32:19,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:19,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:19,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:19,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:19,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 264 transitions, 2828 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:19,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:19,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:19,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:19,822 INFO L124 PetriNetUnfolderBase]: 659/1199 cut-off events. [2024-06-27 23:32:19,822 INFO L125 PetriNetUnfolderBase]: For 112879/112879 co-relation queries the response was YES. [2024-06-27 23:32:19,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 1199 events. 659/1199 cut-off events. For 112879/112879 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6577 event pairs, 126 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 8155. Up to 1157 conditions per place. [2024-06-27 23:32:19,835 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 258 selfloop transitions, 18 changer transitions 0/278 dead transitions. [2024-06-27 23:32:19,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 278 transitions, 3482 flow [2024-06-27 23:32:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:32:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 23:32:19,864 INFO L175 Difference]: Start difference. First operand has 328 places, 264 transitions, 2828 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:32:19,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 278 transitions, 3482 flow [2024-06-27 23:32:20,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 278 transitions, 3333 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:20,503 INFO L231 Difference]: Finished difference. Result has 330 places, 265 transitions, 2791 flow [2024-06-27 23:32:20,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2791, PETRI_PLACES=330, PETRI_TRANSITIONS=265} [2024-06-27 23:32:20,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 301 predicate places. [2024-06-27 23:32:20,503 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 265 transitions, 2791 flow [2024-06-27 23:32:20,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:20,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:20,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:20,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:32:20,504 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:20,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2070423706, now seen corresponding path program 22 times [2024-06-27 23:32:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35883108] [2024-06-27 23:32:20,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:21,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35883108] [2024-06-27 23:32:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35883108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:21,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:21,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:21,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907146311] [2024-06-27 23:32:21,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:21,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:21,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:21,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:21,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 265 transitions, 2791 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:21,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:22,164 INFO L124 PetriNetUnfolderBase]: 656/1195 cut-off events. [2024-06-27 23:32:22,164 INFO L125 PetriNetUnfolderBase]: For 100634/100634 co-relation queries the response was YES. [2024-06-27 23:32:22,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1195 events. 656/1195 cut-off events. For 100634/100634 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6578 event pairs, 87 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 7703. Up to 1089 conditions per place. [2024-06-27 23:32:22,178 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 237 selfloop transitions, 40 changer transitions 0/279 dead transitions. [2024-06-27 23:32:22,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 279 transitions, 3379 flow [2024-06-27 23:32:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 23:32:22,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:32:22,180 INFO L175 Difference]: Start difference. First operand has 330 places, 265 transitions, 2791 flow. Second operand 9 states and 100 transitions. [2024-06-27 23:32:22,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 279 transitions, 3379 flow [2024-06-27 23:32:22,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 279 transitions, 3277 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:22,819 INFO L231 Difference]: Finished difference. Result has 332 places, 265 transitions, 2773 flow [2024-06-27 23:32:22,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2773, PETRI_PLACES=332, PETRI_TRANSITIONS=265} [2024-06-27 23:32:22,819 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 303 predicate places. [2024-06-27 23:32:22,820 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 265 transitions, 2773 flow [2024-06-27 23:32:22,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 23:32:22,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:22,820 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 23:32:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:32:22,820 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:22,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1738392233, now seen corresponding path program 1 times [2024-06-27 23:32:22,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:22,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650161420] [2024-06-27 23:32:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:24,246 INFO 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 23:32:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650161420] [2024-06-27 23:32:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650161420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:24,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165347005] [2024-06-27 23:32:24,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:24,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:24,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:24,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 265 transitions, 2773 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:32:24,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:24,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:24,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:24,854 INFO L124 PetriNetUnfolderBase]: 668/1222 cut-off events. [2024-06-27 23:32:24,854 INFO L125 PetriNetUnfolderBase]: For 134221/134221 co-relation queries the response was YES. [2024-06-27 23:32:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 1222 events. 668/1222 cut-off events. For 134221/134221 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6759 event pairs, 86 based on Foata normal form. 8/1229 useless extension candidates. Maximal degree in co-relation 7755. Up to 1103 conditions per place. [2024-06-27 23:32:24,867 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 244 selfloop transitions, 22 changer transitions 16/284 dead transitions. [2024-06-27 23:32:24,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 284 transitions, 3417 flow [2024-06-27 23:32:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:32:24,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:32:24,868 INFO L175 Difference]: Start difference. First operand has 332 places, 265 transitions, 2773 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:32:24,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 284 transitions, 3417 flow [2024-06-27 23:32:25,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 284 transitions, 3178 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:25,490 INFO L231 Difference]: Finished difference. Result has 333 places, 261 transitions, 2549 flow [2024-06-27 23:32:25,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2549, PETRI_PLACES=333, PETRI_TRANSITIONS=261} [2024-06-27 23:32:25,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 304 predicate places. [2024-06-27 23:32:25,491 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 261 transitions, 2549 flow [2024-06-27 23:32:25,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:32:25,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:25,491 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 23:32:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:32:25,491 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1796484683, now seen corresponding path program 2 times [2024-06-27 23:32:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:25,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704997936] [2024-06-27 23:32:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:26,727 INFO 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 23:32:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:26,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704997936] [2024-06-27 23:32:26,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704997936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:26,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114497302] [2024-06-27 23:32:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:26,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:26,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:26,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:26,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:26,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 261 transitions, 2549 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:26,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:26,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:26,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:27,215 INFO L124 PetriNetUnfolderBase]: 664/1216 cut-off events. [2024-06-27 23:32:27,215 INFO L125 PetriNetUnfolderBase]: For 134877/134877 co-relation queries the response was YES. [2024-06-27 23:32:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1216 events. 664/1216 cut-off events. For 134877/134877 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6709 event pairs, 103 based on Foata normal form. 8/1223 useless extension candidates. Maximal degree in co-relation 7470. Up to 1042 conditions per place. [2024-06-27 23:32:27,257 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 231 selfloop transitions, 30 changer transitions 20/283 dead transitions. [2024-06-27 23:32:27,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 283 transitions, 3209 flow [2024-06-27 23:32:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:32:27,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:32:27,258 INFO L175 Difference]: Start difference. First operand has 333 places, 261 transitions, 2549 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:32:27,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 283 transitions, 3209 flow [2024-06-27 23:32:27,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 283 transitions, 3133 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:27,755 INFO L231 Difference]: Finished difference. Result has 328 places, 253 transitions, 2475 flow [2024-06-27 23:32:27,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2475, PETRI_PLACES=328, PETRI_TRANSITIONS=253} [2024-06-27 23:32:27,756 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 299 predicate places. [2024-06-27 23:32:27,756 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 253 transitions, 2475 flow [2024-06-27 23:32:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:27,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:27,756 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 23:32:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:32:27,757 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:27,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1796604653, now seen corresponding path program 3 times [2024-06-27 23:32:27,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889752401] [2024-06-27 23:32:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:29,064 INFO 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 23:32:29,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:29,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889752401] [2024-06-27 23:32:29,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889752401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:29,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:29,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296333402] [2024-06-27 23:32:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:29,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:29,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:32:29,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 253 transitions, 2475 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:32:29,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:29,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:32:29,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:29,633 INFO L124 PetriNetUnfolderBase]: 645/1183 cut-off events. [2024-06-27 23:32:29,633 INFO L125 PetriNetUnfolderBase]: For 154598/154598 co-relation queries the response was YES. [2024-06-27 23:32:29,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 1183 events. 645/1183 cut-off events. For 154598/154598 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6470 event pairs, 86 based on Foata normal form. 12/1194 useless extension candidates. Maximal degree in co-relation 7437. Up to 1027 conditions per place. [2024-06-27 23:32:29,646 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 232 selfloop transitions, 27 changer transitions 16/277 dead transitions. [2024-06-27 23:32:29,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 277 transitions, 3278 flow [2024-06-27 23:32:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:32:29,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:32:29,647 INFO L175 Difference]: Start difference. First operand has 328 places, 253 transitions, 2475 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:32:29,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 277 transitions, 3278 flow [2024-06-27 23:32:30,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 277 transitions, 3204 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:30,161 INFO L231 Difference]: Finished difference. Result has 324 places, 251 transitions, 2446 flow [2024-06-27 23:32:30,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2446, PETRI_PLACES=324, PETRI_TRANSITIONS=251} [2024-06-27 23:32:30,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 295 predicate places. [2024-06-27 23:32:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 251 transitions, 2446 flow [2024-06-27 23:32:30,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:32:30,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:30,162 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 23:32:30,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:32:30,162 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:30,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:30,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1796600003, now seen corresponding path program 4 times [2024-06-27 23:32:30,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:30,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760889424] [2024-06-27 23:32:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:30,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:31,644 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 23:32:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760889424] [2024-06-27 23:32:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760889424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:31,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625513374] [2024-06-27 23:32:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:31,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:31,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:31,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 251 transitions, 2446 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:31,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:31,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:31,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:32,137 INFO L124 PetriNetUnfolderBase]: 667/1237 cut-off events. [2024-06-27 23:32:32,138 INFO L125 PetriNetUnfolderBase]: For 193498/193498 co-relation queries the response was YES. [2024-06-27 23:32:32,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8976 conditions, 1237 events. 667/1237 cut-off events. For 193498/193498 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6853 event pairs, 110 based on Foata normal form. 8/1244 useless extension candidates. Maximal degree in co-relation 8828. Up to 932 conditions per place. [2024-06-27 23:32:32,152 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 229 selfloop transitions, 31 changer transitions 20/282 dead transitions. [2024-06-27 23:32:32,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 282 transitions, 3487 flow [2024-06-27 23:32:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:32:32,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 23:32:32,154 INFO L175 Difference]: Start difference. First operand has 324 places, 251 transitions, 2446 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:32:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 282 transitions, 3487 flow [2024-06-27 23:32:33,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 282 transitions, 3417 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:33,016 INFO L231 Difference]: Finished difference. Result has 325 places, 241 transitions, 2357 flow [2024-06-27 23:32:33,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2378, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2357, PETRI_PLACES=325, PETRI_TRANSITIONS=241} [2024-06-27 23:32:33,017 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2024-06-27 23:32:33,017 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 241 transitions, 2357 flow [2024-06-27 23:32:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:33,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:33,017 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 23:32:33,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:32:33,018 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:33,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:33,018 INFO L85 PathProgramCache]: Analyzing trace with hash 189083467, now seen corresponding path program 5 times [2024-06-27 23:32:33,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:33,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222743063] [2024-06-27 23:32:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:33,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:34,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222743063] [2024-06-27 23:32:34,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222743063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:34,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:34,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988258936] [2024-06-27 23:32:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:34,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:34,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:34,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 241 transitions, 2357 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:34,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:34,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:34,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:35,134 INFO L124 PetriNetUnfolderBase]: 646/1208 cut-off events. [2024-06-27 23:32:35,134 INFO L125 PetriNetUnfolderBase]: For 258994/258994 co-relation queries the response was YES. [2024-06-27 23:32:35,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8720 conditions, 1208 events. 646/1208 cut-off events. For 258994/258994 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6636 event pairs, 114 based on Foata normal form. 22/1229 useless extension candidates. Maximal degree in co-relation 8584. Up to 978 conditions per place. [2024-06-27 23:32:35,145 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 202 selfloop transitions, 31 changer transitions 27/262 dead transitions. [2024-06-27 23:32:35,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 262 transitions, 3061 flow [2024-06-27 23:32:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:32:35,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-27 23:32:35,146 INFO L175 Difference]: Start difference. First operand has 325 places, 241 transitions, 2357 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:32:35,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 262 transitions, 3061 flow [2024-06-27 23:32:36,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 262 transitions, 2975 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 23:32:36,048 INFO L231 Difference]: Finished difference. Result has 318 places, 224 transitions, 2131 flow [2024-06-27 23:32:36,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2131, PETRI_PLACES=318, PETRI_TRANSITIONS=224} [2024-06-27 23:32:36,049 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 289 predicate places. [2024-06-27 23:32:36,049 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 224 transitions, 2131 flow [2024-06-27 23:32:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:36,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:36,049 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 23:32:36,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:32:36,050 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:36,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 189078817, now seen corresponding path program 6 times [2024-06-27 23:32:36,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:36,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806822037] [2024-06-27 23:32:36,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:36,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:37,326 INFO 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 23:32:37,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:37,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806822037] [2024-06-27 23:32:37,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806822037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:37,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:37,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:37,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350863507] [2024-06-27 23:32:37,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:37,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:37,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:37,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:37,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 224 transitions, 2131 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:37,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:37,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:37,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:37,795 INFO L124 PetriNetUnfolderBase]: 580/1090 cut-off events. [2024-06-27 23:32:37,795 INFO L125 PetriNetUnfolderBase]: For 174033/174033 co-relation queries the response was YES. [2024-06-27 23:32:37,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7856 conditions, 1090 events. 580/1090 cut-off events. For 174033/174033 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5900 event pairs, 103 based on Foata normal form. 8/1097 useless extension candidates. Maximal degree in co-relation 7723. Up to 948 conditions per place. [2024-06-27 23:32:37,807 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 198 selfloop transitions, 25 changer transitions 17/242 dead transitions. [2024-06-27 23:32:37,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 242 transitions, 2687 flow [2024-06-27 23:32:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:32:37,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:32:37,808 INFO L175 Difference]: Start difference. First operand has 318 places, 224 transitions, 2131 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:32:37,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 242 transitions, 2687 flow [2024-06-27 23:32:38,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 242 transitions, 2585 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-27 23:32:38,451 INFO L231 Difference]: Finished difference. Result has 309 places, 215 transitions, 2020 flow [2024-06-27 23:32:38,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=309, PETRI_TRANSITIONS=215} [2024-06-27 23:32:38,451 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2024-06-27 23:32:38,451 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 215 transitions, 2020 flow [2024-06-27 23:32:38,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:38,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:38,451 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 23:32:38,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:32:38,452 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:38,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1759182731, now seen corresponding path program 7 times [2024-06-27 23:32:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957179704] [2024-06-27 23:32:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:38,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:39,760 INFO 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 23:32:39,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:39,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957179704] [2024-06-27 23:32:39,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957179704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:39,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:39,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887633868] [2024-06-27 23:32:39,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:39,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:39,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:39,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 215 transitions, 2020 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:39,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:39,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:39,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:40,123 INFO L124 PetriNetUnfolderBase]: 559/1051 cut-off events. [2024-06-27 23:32:40,123 INFO L125 PetriNetUnfolderBase]: For 174275/174275 co-relation queries the response was YES. [2024-06-27 23:32:40,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7660 conditions, 1051 events. 559/1051 cut-off events. For 174275/174275 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5644 event pairs, 88 based on Foata normal form. 8/1058 useless extension candidates. Maximal degree in co-relation 7530. Up to 894 conditions per place. [2024-06-27 23:32:40,133 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 187 selfloop transitions, 18 changer transitions 26/234 dead transitions. [2024-06-27 23:32:40,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 234 transitions, 2560 flow [2024-06-27 23:32:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:32:40,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:32:40,135 INFO L175 Difference]: Start difference. First operand has 309 places, 215 transitions, 2020 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:32:40,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 234 transitions, 2560 flow [2024-06-27 23:32:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 234 transitions, 2437 flow, removed 27 selfloop flow, removed 16 redundant places. [2024-06-27 23:32:40,779 INFO L231 Difference]: Finished difference. Result has 293 places, 199 transitions, 1779 flow [2024-06-27 23:32:40,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1779, PETRI_PLACES=293, PETRI_TRANSITIONS=199} [2024-06-27 23:32:40,779 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 264 predicate places. [2024-06-27 23:32:40,779 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 199 transitions, 1779 flow [2024-06-27 23:32:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:40,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:40,780 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 23:32:40,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:32:40,780 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:40,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash -507874385, now seen corresponding path program 1 times [2024-06-27 23:32:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108432867] [2024-06-27 23:32:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:40,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108432867] [2024-06-27 23:32:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108432867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793032349] [2024-06-27 23:32:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:42,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:42,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 199 transitions, 1779 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:42,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:42,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:42,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:42,746 INFO L124 PetriNetUnfolderBase]: 542/1012 cut-off events. [2024-06-27 23:32:42,747 INFO L125 PetriNetUnfolderBase]: For 165172/165172 co-relation queries the response was YES. [2024-06-27 23:32:42,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8151 conditions, 1012 events. 542/1012 cut-off events. For 165172/165172 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5273 event pairs, 126 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 8031. Up to 821 conditions per place. [2024-06-27 23:32:42,758 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 185 selfloop transitions, 34 changer transitions 0/221 dead transitions. [2024-06-27 23:32:42,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 221 transitions, 2599 flow [2024-06-27 23:32:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:32:42,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 23:32:42,759 INFO L175 Difference]: Start difference. First operand has 293 places, 199 transitions, 1779 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:32:42,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 221 transitions, 2599 flow [2024-06-27 23:32:43,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 221 transitions, 2507 flow, removed 27 selfloop flow, removed 16 redundant places. [2024-06-27 23:32:43,373 INFO L231 Difference]: Finished difference. Result has 270 places, 200 transitions, 1811 flow [2024-06-27 23:32:43,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=270, PETRI_TRANSITIONS=200} [2024-06-27 23:32:43,373 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:32:43,373 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 200 transitions, 1811 flow [2024-06-27 23:32:43,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:43,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:43,374 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 23:32:43,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:32:43,374 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:43,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash -507882755, now seen corresponding path program 2 times [2024-06-27 23:32:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:43,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586833892] [2024-06-27 23:32:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:44,981 INFO 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 23:32:44,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586833892] [2024-06-27 23:32:44,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586833892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:44,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:44,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:44,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034363683] [2024-06-27 23:32:44,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:44,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:44,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:45,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:45,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 200 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:45,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:45,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:45,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:45,581 INFO L124 PetriNetUnfolderBase]: 546/1021 cut-off events. [2024-06-27 23:32:45,581 INFO L125 PetriNetUnfolderBase]: For 140053/140053 co-relation queries the response was YES. [2024-06-27 23:32:45,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1021 events. 546/1021 cut-off events. For 140053/140053 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5365 event pairs, 132 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 7864. Up to 964 conditions per place. [2024-06-27 23:32:45,591 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 189 selfloop transitions, 25 changer transitions 0/216 dead transitions. [2024-06-27 23:32:45,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 216 transitions, 2329 flow [2024-06-27 23:32:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:45,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:32:45,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:32:45,592 INFO L175 Difference]: Start difference. First operand has 270 places, 200 transitions, 1811 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:32:45,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 216 transitions, 2329 flow [2024-06-27 23:32:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 216 transitions, 2232 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:45,946 INFO L231 Difference]: Finished difference. Result has 271 places, 203 transitions, 1830 flow [2024-06-27 23:32:45,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=271, PETRI_TRANSITIONS=203} [2024-06-27 23:32:45,947 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-27 23:32:45,947 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 203 transitions, 1830 flow [2024-06-27 23:32:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:45,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:45,947 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 23:32:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:32:45,948 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:45,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash -508120339, now seen corresponding path program 8 times [2024-06-27 23:32:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158913166] [2024-06-27 23:32:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:47,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:47,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158913166] [2024-06-27 23:32:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158913166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:47,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935437026] [2024-06-27 23:32:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:47,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:47,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:47,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:47,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 203 transitions, 1830 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:47,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:47,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:47,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:48,147 INFO L124 PetriNetUnfolderBase]: 533/998 cut-off events. [2024-06-27 23:32:48,148 INFO L125 PetriNetUnfolderBase]: For 128468/128468 co-relation queries the response was YES. [2024-06-27 23:32:48,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 998 events. 533/998 cut-off events. For 128468/128468 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5262 event pairs, 121 based on Foata normal form. 10/1007 useless extension candidates. Maximal degree in co-relation 6739. Up to 853 conditions per place. [2024-06-27 23:32:48,158 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 179 selfloop transitions, 31 changer transitions 9/221 dead transitions. [2024-06-27 23:32:48,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 221 transitions, 2414 flow [2024-06-27 23:32:48,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:32:48,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:32:48,159 INFO L175 Difference]: Start difference. First operand has 271 places, 203 transitions, 1830 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:32:48,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 221 transitions, 2414 flow [2024-06-27 23:32:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 221 transitions, 2333 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:48,544 INFO L231 Difference]: Finished difference. Result has 274 places, 198 transitions, 1792 flow [2024-06-27 23:32:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=274, PETRI_TRANSITIONS=198} [2024-06-27 23:32:48,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:32:48,545 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 198 transitions, 1792 flow [2024-06-27 23:32:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:48,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:48,545 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 23:32:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:32:48,545 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:48,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -508113395, now seen corresponding path program 3 times [2024-06-27 23:32:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086352674] [2024-06-27 23:32:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:50,040 INFO 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 23:32:50,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:50,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086352674] [2024-06-27 23:32:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086352674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:50,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:50,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353492734] [2024-06-27 23:32:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:50,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 198 transitions, 1792 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:50,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:50,564 INFO L124 PetriNetUnfolderBase]: 525/986 cut-off events. [2024-06-27 23:32:50,564 INFO L125 PetriNetUnfolderBase]: For 133022/133022 co-relation queries the response was YES. [2024-06-27 23:32:50,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 986 events. 525/986 cut-off events. For 133022/133022 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5171 event pairs, 119 based on Foata normal form. 10/995 useless extension candidates. Maximal degree in co-relation 6750. Up to 853 conditions per place. [2024-06-27 23:32:50,572 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 179 selfloop transitions, 26 changer transitions 11/218 dead transitions. [2024-06-27 23:32:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 218 transitions, 2408 flow [2024-06-27 23:32:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:32:50,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:32:50,573 INFO L175 Difference]: Start difference. First operand has 274 places, 198 transitions, 1792 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:32:50,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 218 transitions, 2408 flow [2024-06-27 23:32:50,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 218 transitions, 2288 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 23:32:50,918 INFO L231 Difference]: Finished difference. Result has 270 places, 195 transitions, 1716 flow [2024-06-27 23:32:50,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1716, PETRI_PLACES=270, PETRI_TRANSITIONS=195} [2024-06-27 23:32:50,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:32:50,919 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 195 transitions, 1716 flow [2024-06-27 23:32:50,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:50,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:50,920 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 23:32:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:32:50,920 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:50,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -514376449, now seen corresponding path program 9 times [2024-06-27 23:32:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128311408] [2024-06-27 23:32:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128311408] [2024-06-27 23:32:52,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128311408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:52,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:52,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:52,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959409715] [2024-06-27 23:32:52,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:52,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:52,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 195 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:52,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:52,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:52,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:52,991 INFO L124 PetriNetUnfolderBase]: 503/944 cut-off events. [2024-06-27 23:32:52,991 INFO L125 PetriNetUnfolderBase]: For 102153/102153 co-relation queries the response was YES. [2024-06-27 23:32:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6495 conditions, 944 events. 503/944 cut-off events. For 102153/102153 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4913 event pairs, 115 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 6386. Up to 855 conditions per place. [2024-06-27 23:32:53,000 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 180 selfloop transitions, 29 changer transitions 0/211 dead transitions. [2024-06-27 23:32:53,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 211 transitions, 2252 flow [2024-06-27 23:32:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:32:53,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:32:53,004 INFO L175 Difference]: Start difference. First operand has 270 places, 195 transitions, 1716 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:32:53,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 211 transitions, 2252 flow [2024-06-27 23:32:53,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 211 transitions, 2196 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:53,365 INFO L231 Difference]: Finished difference. Result has 267 places, 196 transitions, 1742 flow [2024-06-27 23:32:53,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1742, PETRI_PLACES=267, PETRI_TRANSITIONS=196} [2024-06-27 23:32:53,366 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-27 23:32:53,366 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 196 transitions, 1742 flow [2024-06-27 23:32:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:53,367 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 23:32:53,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:32:53,369 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:53,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -514369505, now seen corresponding path program 4 times [2024-06-27 23:32:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473425735] [2024-06-27 23:32:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:54,874 INFO 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 23:32:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473425735] [2024-06-27 23:32:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473425735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:54,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682419051] [2024-06-27 23:32:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:54,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 196 transitions, 1742 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:54,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:54,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:54,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:55,397 INFO L124 PetriNetUnfolderBase]: 519/980 cut-off events. [2024-06-27 23:32:55,397 INFO L125 PetriNetUnfolderBase]: For 129533/129533 co-relation queries the response was YES. [2024-06-27 23:32:55,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6712 conditions, 980 events. 519/980 cut-off events. For 129533/129533 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5157 event pairs, 119 based on Foata normal form. 10/989 useless extension candidates. Maximal degree in co-relation 6604. Up to 855 conditions per place. [2024-06-27 23:32:55,405 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 179 selfloop transitions, 24 changer transitions 11/216 dead transitions. [2024-06-27 23:32:55,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 216 transitions, 2346 flow [2024-06-27 23:32:55,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:32:55,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:32:55,406 INFO L175 Difference]: Start difference. First operand has 267 places, 196 transitions, 1742 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:32:55,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 216 transitions, 2346 flow [2024-06-27 23:32:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 216 transitions, 2274 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:55,747 INFO L231 Difference]: Finished difference. Result has 270 places, 193 transitions, 1702 flow [2024-06-27 23:32:55,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1702, PETRI_PLACES=270, PETRI_TRANSITIONS=193} [2024-06-27 23:32:55,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:32:55,748 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 193 transitions, 1702 flow [2024-06-27 23:32:55,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:55,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:55,748 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 23:32:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:32:55,748 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:55,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -181000159, now seen corresponding path program 10 times [2024-06-27 23:32:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548375571] [2024-06-27 23:32:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:57,020 INFO 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 23:32:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548375571] [2024-06-27 23:32:57,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548375571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:57,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37080824] [2024-06-27 23:32:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:57,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:57,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 193 transitions, 1702 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:57,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:57,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:57,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:57,475 INFO L124 PetriNetUnfolderBase]: 541/1029 cut-off events. [2024-06-27 23:32:57,475 INFO L125 PetriNetUnfolderBase]: For 170496/170496 co-relation queries the response was YES. [2024-06-27 23:32:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8002 conditions, 1029 events. 541/1029 cut-off events. For 170496/170496 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5488 event pairs, 106 based on Foata normal form. 8/1036 useless extension candidates. Maximal degree in co-relation 7893. Up to 767 conditions per place. [2024-06-27 23:32:57,485 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 173 selfloop transitions, 31 changer transitions 11/217 dead transitions. [2024-06-27 23:32:57,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 217 transitions, 2522 flow [2024-06-27 23:32:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:57,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:32:57,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 23:32:57,486 INFO L175 Difference]: Start difference. First operand has 270 places, 193 transitions, 1702 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:32:57,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 217 transitions, 2522 flow [2024-06-27 23:32:57,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 217 transitions, 2466 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:57,951 INFO L231 Difference]: Finished difference. Result has 267 places, 187 transitions, 1676 flow [2024-06-27 23:32:57,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1676, PETRI_PLACES=267, PETRI_TRANSITIONS=187} [2024-06-27 23:32:57,952 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-27 23:32:57,952 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 187 transitions, 1676 flow [2024-06-27 23:32:57,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:57,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:57,952 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 23:32:57,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:32:57,953 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:57,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:57,953 INFO L85 PathProgramCache]: Analyzing trace with hash -514554079, now seen corresponding path program 11 times [2024-06-27 23:32:57,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:57,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829996150] [2024-06-27 23:32:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:57,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:59,425 INFO 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 23:32:59,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:59,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829996150] [2024-06-27 23:32:59,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829996150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:59,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:59,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491825994] [2024-06-27 23:32:59,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:59,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:59,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:59,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:59,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:59,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 187 transitions, 1676 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:59,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:59,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:59,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:59,824 INFO L124 PetriNetUnfolderBase]: 517/986 cut-off events. [2024-06-27 23:32:59,825 INFO L125 PetriNetUnfolderBase]: For 144998/144998 co-relation queries the response was YES. [2024-06-27 23:32:59,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7832 conditions, 986 events. 517/986 cut-off events. For 144998/144998 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5228 event pairs, 139 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 7724. Up to 875 conditions per place. [2024-06-27 23:32:59,833 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 175 selfloop transitions, 25 changer transitions 0/202 dead transitions. [2024-06-27 23:32:59,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 202 transitions, 2150 flow [2024-06-27 23:32:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:32:59,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:32:59,835 INFO L175 Difference]: Start difference. First operand has 267 places, 187 transitions, 1676 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:32:59,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 202 transitions, 2150 flow [2024-06-27 23:33:00,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 202 transitions, 2086 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:00,215 INFO L231 Difference]: Finished difference. Result has 264 places, 188 transitions, 1689 flow [2024-06-27 23:33:00,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1689, PETRI_PLACES=264, PETRI_TRANSITIONS=188} [2024-06-27 23:33:00,215 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:33:00,216 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 188 transitions, 1689 flow [2024-06-27 23:33:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:00,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:00,216 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 23:33:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:33:00,216 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:00,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash -685371829, now seen corresponding path program 12 times [2024-06-27 23:33:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114094378] [2024-06-27 23:33:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:01,488 INFO 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 23:33:01,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:01,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114094378] [2024-06-27 23:33:01,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114094378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:01,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:01,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:01,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430508685] [2024-06-27 23:33:01,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:01,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:01,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:01,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:01,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:01,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 188 transitions, 1689 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:01,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:01,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:01,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:01,826 INFO L124 PetriNetUnfolderBase]: 521/993 cut-off events. [2024-06-27 23:33:01,826 INFO L125 PetriNetUnfolderBase]: For 139845/139845 co-relation queries the response was YES. [2024-06-27 23:33:01,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 993 events. 521/993 cut-off events. For 139845/139845 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5278 event pairs, 108 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 7747. Up to 875 conditions per place. [2024-06-27 23:33:01,836 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 169 selfloop transitions, 31 changer transitions 0/203 dead transitions. [2024-06-27 23:33:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 203 transitions, 2143 flow [2024-06-27 23:33:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:33:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:33:01,837 INFO L175 Difference]: Start difference. First operand has 264 places, 188 transitions, 1689 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:33:01,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 203 transitions, 2143 flow [2024-06-27 23:33:02,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 203 transitions, 2078 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:02,269 INFO L231 Difference]: Finished difference. Result has 266 places, 189 transitions, 1715 flow [2024-06-27 23:33:02,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1715, PETRI_PLACES=266, PETRI_TRANSITIONS=189} [2024-06-27 23:33:02,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-27 23:33:02,270 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 189 transitions, 1715 flow [2024-06-27 23:33:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:02,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:02,270 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 23:33:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:33:02,271 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:02,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -685251859, now seen corresponding path program 13 times [2024-06-27 23:33:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605990380] [2024-06-27 23:33:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:03,662 INFO 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 23:33:03,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:03,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605990380] [2024-06-27 23:33:03,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605990380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:03,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:03,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028347641] [2024-06-27 23:33:03,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:03,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:03,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:03,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 189 transitions, 1715 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:03,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:03,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:03,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:04,036 INFO L124 PetriNetUnfolderBase]: 518/988 cut-off events. [2024-06-27 23:33:04,036 INFO L125 PetriNetUnfolderBase]: For 134476/134476 co-relation queries the response was YES. [2024-06-27 23:33:04,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 988 events. 518/988 cut-off events. For 134476/134476 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5243 event pairs, 103 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7596. Up to 867 conditions per place. [2024-06-27 23:33:04,045 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 170 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2024-06-27 23:33:04,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 207 transitions, 2265 flow [2024-06-27 23:33:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:33:04,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-27 23:33:04,046 INFO L175 Difference]: Start difference. First operand has 266 places, 189 transitions, 1715 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:33:04,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 207 transitions, 2265 flow [2024-06-27 23:33:04,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 207 transitions, 2186 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:04,509 INFO L231 Difference]: Finished difference. Result has 269 places, 193 transitions, 1788 flow [2024-06-27 23:33:04,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=269, PETRI_TRANSITIONS=193} [2024-06-27 23:33:04,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-27 23:33:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 193 transitions, 1788 flow [2024-06-27 23:33:04,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:04,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:04,510 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 23:33:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:33:04,510 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:04,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -601294145, now seen corresponding path program 5 times [2024-06-27 23:33:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:04,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360190700] [2024-06-27 23:33:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:04,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:05,925 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 23:33:05,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360190700] [2024-06-27 23:33:05,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360190700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:05,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:05,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915808857] [2024-06-27 23:33:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:05,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:06,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:06,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 193 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:06,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:06,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:06,374 INFO L124 PetriNetUnfolderBase]: 527/1011 cut-off events. [2024-06-27 23:33:06,374 INFO L125 PetriNetUnfolderBase]: For 159642/159642 co-relation queries the response was YES. [2024-06-27 23:33:06,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 1011 events. 527/1011 cut-off events. For 159642/159642 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5410 event pairs, 108 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 7576. Up to 865 conditions per place. [2024-06-27 23:33:06,383 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 27 changer transitions 11/214 dead transitions. [2024-06-27 23:33:06,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 214 transitions, 2415 flow [2024-06-27 23:33:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:06,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:33:06,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:33:06,384 INFO L175 Difference]: Start difference. First operand has 269 places, 193 transitions, 1788 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:33:06,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 214 transitions, 2415 flow [2024-06-27 23:33:06,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 214 transitions, 2302 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 23:33:06,840 INFO L231 Difference]: Finished difference. Result has 275 places, 191 transitions, 1738 flow [2024-06-27 23:33:06,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=275, PETRI_TRANSITIONS=191} [2024-06-27 23:33:06,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-27 23:33:06,840 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 191 transitions, 1738 flow [2024-06-27 23:33:06,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:06,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:06,856 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 23:33:06,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:33:06,857 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:06,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1082459055, now seen corresponding path program 6 times [2024-06-27 23:33:06,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994044255] [2024-06-27 23:33:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:06,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994044255] [2024-06-27 23:33:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994044255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:08,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:08,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700355590] [2024-06-27 23:33:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:08,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:08,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:08,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:33:08,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 191 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:08,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:08,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:33:08,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:09,345 INFO L124 PetriNetUnfolderBase]: 548/1058 cut-off events. [2024-06-27 23:33:09,345 INFO L125 PetriNetUnfolderBase]: For 194336/194336 co-relation queries the response was YES. [2024-06-27 23:33:09,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8756 conditions, 1058 events. 548/1058 cut-off events. For 194336/194336 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5730 event pairs, 173 based on Foata normal form. 8/1065 useless extension candidates. Maximal degree in co-relation 8644. Up to 881 conditions per place. [2024-06-27 23:33:09,356 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 181 selfloop transitions, 27 changer transitions 7/217 dead transitions. [2024-06-27 23:33:09,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 217 transitions, 2733 flow [2024-06-27 23:33:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:33:09,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:33:09,357 INFO L175 Difference]: Start difference. First operand has 275 places, 191 transitions, 1738 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:33:09,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 217 transitions, 2733 flow [2024-06-27 23:33:09,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 217 transitions, 2669 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:09,889 INFO L231 Difference]: Finished difference. Result has 276 places, 192 transitions, 1744 flow [2024-06-27 23:33:09,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=276, PETRI_TRANSITIONS=192} [2024-06-27 23:33:09,890 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-27 23:33:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 192 transitions, 1744 flow [2024-06-27 23:33:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:09,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:09,891 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 23:33:09,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:33:09,891 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:09,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1082450685, now seen corresponding path program 7 times [2024-06-27 23:33:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:09,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512222473] [2024-06-27 23:33:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:11,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512222473] [2024-06-27 23:33:11,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512222473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092972400] [2024-06-27 23:33:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:11,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:11,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:11,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:33:11,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 192 transitions, 1744 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:11,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:11,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:33:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:12,463 INFO L124 PetriNetUnfolderBase]: 546/1056 cut-off events. [2024-06-27 23:33:12,464 INFO L125 PetriNetUnfolderBase]: For 202202/202202 co-relation queries the response was YES. [2024-06-27 23:33:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8771 conditions, 1056 events. 546/1056 cut-off events. For 202202/202202 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5725 event pairs, 179 based on Foata normal form. 10/1065 useless extension candidates. Maximal degree in co-relation 8659. Up to 952 conditions per place. [2024-06-27 23:33:12,474 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 172 selfloop transitions, 23 changer transitions 13/210 dead transitions. [2024-06-27 23:33:12,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 210 transitions, 2467 flow [2024-06-27 23:33:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 23:33:12,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:33:12,475 INFO L175 Difference]: Start difference. First operand has 276 places, 192 transitions, 1744 flow. Second operand 11 states and 114 transitions. [2024-06-27 23:33:12,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 210 transitions, 2467 flow [2024-06-27 23:33:13,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 210 transitions, 2431 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:13,054 INFO L231 Difference]: Finished difference. Result has 277 places, 187 transitions, 1715 flow [2024-06-27 23:33:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1715, PETRI_PLACES=277, PETRI_TRANSITIONS=187} [2024-06-27 23:33:13,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-27 23:33:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 187 transitions, 1715 flow [2024-06-27 23:33:13,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:13,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:13,055 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 23:33:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:33:13,055 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:13,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1714375773, now seen corresponding path program 14 times [2024-06-27 23:33:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468047277] [2024-06-27 23:33:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:14,317 INFO 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 23:33:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468047277] [2024-06-27 23:33:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468047277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:33:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058936997] [2024-06-27 23:33:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:14,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:33:14,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:33:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:33:14,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:14,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 187 transitions, 1715 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:14,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:14,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:14,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:14,658 INFO L124 PetriNetUnfolderBase]: 525/1014 cut-off events. [2024-06-27 23:33:14,658 INFO L125 PetriNetUnfolderBase]: For 167898/167898 co-relation queries the response was YES. [2024-06-27 23:33:14,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8537 conditions, 1014 events. 525/1014 cut-off events. For 167898/167898 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5461 event pairs, 133 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 8426. Up to 788 conditions per place. [2024-06-27 23:33:14,667 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-06-27 23:33:14,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 203 transitions, 2437 flow [2024-06-27 23:33:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:33:14,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-27 23:33:14,669 INFO L175 Difference]: Start difference. First operand has 277 places, 187 transitions, 1715 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:33:14,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 203 transitions, 2437 flow [2024-06-27 23:33:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 203 transitions, 2368 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:15,243 INFO L231 Difference]: Finished difference. Result has 272 places, 188 transitions, 1800 flow [2024-06-27 23:33:15,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1800, PETRI_PLACES=272, PETRI_TRANSITIONS=188} [2024-06-27 23:33:15,243 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-27 23:33:15,243 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 188 transitions, 1800 flow [2024-06-27 23:33:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:15,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:15,244 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 23:33:15,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:33:15,244 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:15,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:15,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1578468939, now seen corresponding path program 15 times [2024-06-27 23:33:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404508867] [2024-06-27 23:33:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404508867] [2024-06-27 23:33:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404508867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:16,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:16,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304149897] [2024-06-27 23:33:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:16,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:16,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 188 transitions, 1800 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:16,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:16,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:16,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:17,207 INFO L124 PetriNetUnfolderBase]: 545/1058 cut-off events. [2024-06-27 23:33:17,207 INFO L125 PetriNetUnfolderBase]: For 206441/206441 co-relation queries the response was YES. [2024-06-27 23:33:17,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8918 conditions, 1058 events. 545/1058 cut-off events. For 206441/206441 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5759 event pairs, 132 based on Foata normal form. 12/1069 useless extension candidates. Maximal degree in co-relation 8807. Up to 891 conditions per place. [2024-06-27 23:33:17,217 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 159 selfloop transitions, 30 changer transitions 14/205 dead transitions. [2024-06-27 23:33:17,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 205 transitions, 2382 flow [2024-06-27 23:33:17,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:33:17,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:33:17,218 INFO L175 Difference]: Start difference. First operand has 272 places, 188 transitions, 1800 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:33:17,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 205 transitions, 2382 flow [2024-06-27 23:33:17,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 205 transitions, 2240 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:17,689 INFO L231 Difference]: Finished difference. Result has 274 places, 184 transitions, 1692 flow [2024-06-27 23:33:17,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1692, PETRI_PLACES=274, PETRI_TRANSITIONS=184} [2024-06-27 23:33:17,690 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:33:17,690 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 184 transitions, 1692 flow [2024-06-27 23:33:17,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:17,690 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 23:33:17,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:33:17,690 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:17,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1326011619, now seen corresponding path program 16 times [2024-06-27 23:33:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545385412] [2024-06-27 23:33:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:17,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:19,078 INFO 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 23:33:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545385412] [2024-06-27 23:33:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545385412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:19,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:19,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421497299] [2024-06-27 23:33:19,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:19,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:19,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:19,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 184 transitions, 1692 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:19,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:19,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:19,483 INFO L124 PetriNetUnfolderBase]: 529/1035 cut-off events. [2024-06-27 23:33:19,483 INFO L125 PetriNetUnfolderBase]: For 210290/210290 co-relation queries the response was YES. [2024-06-27 23:33:19,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8648 conditions, 1035 events. 529/1035 cut-off events. For 210290/210290 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5670 event pairs, 139 based on Foata normal form. 12/1046 useless extension candidates. Maximal degree in co-relation 8536. Up to 898 conditions per place. [2024-06-27 23:33:19,518 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 164 selfloop transitions, 28 changer transitions 6/201 dead transitions. [2024-06-27 23:33:19,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 201 transitions, 2260 flow [2024-06-27 23:33:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:33:19,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-27 23:33:19,520 INFO L175 Difference]: Start difference. First operand has 274 places, 184 transitions, 1692 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:33:19,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 201 transitions, 2260 flow [2024-06-27 23:33:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 201 transitions, 2192 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:19,998 INFO L231 Difference]: Finished difference. Result has 272 places, 183 transitions, 1706 flow [2024-06-27 23:33:19,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1706, PETRI_PLACES=272, PETRI_TRANSITIONS=183} [2024-06-27 23:33:19,998 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-27 23:33:19,998 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 183 transitions, 1706 flow [2024-06-27 23:33:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:19,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:19,999 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 23:33:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:33:19,999 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:20,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1750965773, now seen corresponding path program 8 times [2024-06-27 23:33:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650580055] [2024-06-27 23:33:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:20,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:21,314 INFO 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 23:33:21,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:21,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650580055] [2024-06-27 23:33:21,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650580055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:21,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:21,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777447136] [2024-06-27 23:33:21,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:21,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:21,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:21,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:21,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 183 transitions, 1706 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:21,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:21,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:21,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:21,749 INFO L124 PetriNetUnfolderBase]: 521/1023 cut-off events. [2024-06-27 23:33:21,750 INFO L125 PetriNetUnfolderBase]: For 197611/197611 co-relation queries the response was YES. [2024-06-27 23:33:21,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 1023 events. 521/1023 cut-off events. For 197611/197611 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5574 event pairs, 141 based on Foata normal form. 10/1032 useless extension candidates. Maximal degree in co-relation 8425. Up to 898 conditions per place. [2024-06-27 23:33:21,760 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 163 selfloop transitions, 24 changer transitions 11/201 dead transitions. [2024-06-27 23:33:21,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 201 transitions, 2270 flow [2024-06-27 23:33:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:33:21,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-27 23:33:21,761 INFO L175 Difference]: Start difference. First operand has 272 places, 183 transitions, 1706 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:33:21,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 201 transitions, 2270 flow [2024-06-27 23:33:22,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 201 transitions, 2190 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:22,283 INFO L231 Difference]: Finished difference. Result has 275 places, 180 transitions, 1660 flow [2024-06-27 23:33:22,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1660, PETRI_PLACES=275, PETRI_TRANSITIONS=180} [2024-06-27 23:33:22,283 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-27 23:33:22,283 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 180 transitions, 1660 flow [2024-06-27 23:33:22,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:22,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:22,284 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 23:33:22,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:33:22,284 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:22,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1326257573, now seen corresponding path program 9 times [2024-06-27 23:33:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453882214] [2024-06-27 23:33:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:22,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:23,990 INFO 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 23:33:23,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:23,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453882214] [2024-06-27 23:33:23,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453882214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:23,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:23,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730670567] [2024-06-27 23:33:23,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:23,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:24,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:24,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 180 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:24,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:24,412 INFO L124 PetriNetUnfolderBase]: 514/1014 cut-off events. [2024-06-27 23:33:24,412 INFO L125 PetriNetUnfolderBase]: For 191754/191754 co-relation queries the response was YES. [2024-06-27 23:33:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8983 conditions, 1014 events. 514/1014 cut-off events. For 191754/191754 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5536 event pairs, 150 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 8871. Up to 916 conditions per place. [2024-06-27 23:33:24,422 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 173 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2024-06-27 23:33:24,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 196 transitions, 2308 flow [2024-06-27 23:33:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:33:24,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:33:24,423 INFO L175 Difference]: Start difference. First operand has 275 places, 180 transitions, 1660 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:33:24,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 196 transitions, 2308 flow [2024-06-27 23:33:24,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 196 transitions, 2252 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:24,988 INFO L231 Difference]: Finished difference. Result has 273 places, 181 transitions, 1680 flow [2024-06-27 23:33:24,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=273, PETRI_TRANSITIONS=181} [2024-06-27 23:33:24,988 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-27 23:33:24,988 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 181 transitions, 1680 flow [2024-06-27 23:33:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:24,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:24,989 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 23:33:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:33:24,989 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1153344099, now seen corresponding path program 17 times [2024-06-27 23:33:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092565422] [2024-06-27 23:33:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092565422] [2024-06-27 23:33:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092565422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:26,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918010526] [2024-06-27 23:33:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:26,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:26,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:26,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:26,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 181 transitions, 1680 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:26,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:26,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:26,879 INFO L124 PetriNetUnfolderBase]: 526/1041 cut-off events. [2024-06-27 23:33:26,879 INFO L125 PetriNetUnfolderBase]: For 208895/208895 co-relation queries the response was YES. [2024-06-27 23:33:26,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9118 conditions, 1041 events. 526/1041 cut-off events. For 208895/208895 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5722 event pairs, 141 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 9007. Up to 904 conditions per place. [2024-06-27 23:33:26,889 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 153 selfloop transitions, 27 changer transitions 13/195 dead transitions. [2024-06-27 23:33:26,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 195 transitions, 2140 flow [2024-06-27 23:33:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:33:26,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-27 23:33:26,890 INFO L175 Difference]: Start difference. First operand has 273 places, 181 transitions, 1680 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:33:26,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 195 transitions, 2140 flow [2024-06-27 23:33:27,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 195 transitions, 2078 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:27,441 INFO L231 Difference]: Finished difference. Result has 274 places, 176 transitions, 1645 flow [2024-06-27 23:33:27,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1645, PETRI_PLACES=274, PETRI_TRANSITIONS=176} [2024-06-27 23:33:27,442 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:33:27,442 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 176 transitions, 1645 flow [2024-06-27 23:33:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:27,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:27,442 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 23:33:27,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:33:27,443 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:27,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash 657272835, now seen corresponding path program 10 times [2024-06-27 23:33:27,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:27,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456678811] [2024-06-27 23:33:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:27,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:30,019 INFO 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 23:33:30,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456678811] [2024-06-27 23:33:30,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456678811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:30,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:30,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:30,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945244498] [2024-06-27 23:33:30,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:30,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:30,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:30,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:33:30,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 176 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:30,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:30,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:33:30,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:30,756 INFO L124 PetriNetUnfolderBase]: 498/984 cut-off events. [2024-06-27 23:33:30,756 INFO L125 PetriNetUnfolderBase]: For 192589/192589 co-relation queries the response was YES. [2024-06-27 23:33:30,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8181 conditions, 984 events. 498/984 cut-off events. For 192589/192589 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5329 event pairs, 174 based on Foata normal form. 10/993 useless extension candidates. Maximal degree in co-relation 8069. Up to 893 conditions per place. [2024-06-27 23:33:30,764 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 161 selfloop transitions, 25 changer transitions 5/193 dead transitions. [2024-06-27 23:33:30,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 193 transitions, 2331 flow [2024-06-27 23:33:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 23:33:30,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 23:33:30,766 INFO L175 Difference]: Start difference. First operand has 274 places, 176 transitions, 1645 flow. Second operand 11 states and 112 transitions. [2024-06-27 23:33:30,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 193 transitions, 2331 flow [2024-06-27 23:33:31,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 193 transitions, 2242 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:31,329 INFO L231 Difference]: Finished difference. Result has 270 places, 176 transitions, 1639 flow [2024-06-27 23:33:31,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1639, PETRI_PLACES=270, PETRI_TRANSITIONS=176} [2024-06-27 23:33:31,330 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:33:31,330 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 176 transitions, 1639 flow [2024-06-27 23:33:31,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:31,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:31,330 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 23:33:31,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:33:31,331 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:31,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1148760129, now seen corresponding path program 18 times [2024-06-27 23:33:31,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:31,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506855448] [2024-06-27 23:33:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506855448] [2024-06-27 23:33:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506855448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:33:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935702822] [2024-06-27 23:33:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:33:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:33:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:33:32,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:32,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 176 transitions, 1639 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:32,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:32,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:32,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:32,782 INFO L124 PetriNetUnfolderBase]: 504/1003 cut-off events. [2024-06-27 23:33:32,783 INFO L125 PetriNetUnfolderBase]: For 174870/174870 co-relation queries the response was YES. [2024-06-27 23:33:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8159 conditions, 1003 events. 504/1003 cut-off events. For 174870/174870 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5494 event pairs, 124 based on Foata normal form. 8/1010 useless extension candidates. Maximal degree in co-relation 8050. Up to 866 conditions per place. [2024-06-27 23:33:32,792 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 148 selfloop transitions, 25 changer transitions 15/191 dead transitions. [2024-06-27 23:33:32,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 191 transitions, 2091 flow [2024-06-27 23:33:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:33:32,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 23:33:32,794 INFO L175 Difference]: Start difference. First operand has 270 places, 176 transitions, 1639 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:33:32,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 191 transitions, 2091 flow [2024-06-27 23:33:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 191 transitions, 2019 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:33,290 INFO L231 Difference]: Finished difference. Result has 270 places, 171 transitions, 1589 flow [2024-06-27 23:33:33,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1589, PETRI_PLACES=270, PETRI_TRANSITIONS=171} [2024-06-27 23:33:33,291 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:33:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 171 transitions, 1589 flow [2024-06-27 23:33:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:33,291 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 23:33:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:33:33,291 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1744702719, now seen corresponding path program 19 times [2024-06-27 23:33:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303539496] [2024-06-27 23:33:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:34,711 INFO 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 23:33:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303539496] [2024-06-27 23:33:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303539496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:34,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642419520] [2024-06-27 23:33:34,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:34,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:34,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 171 transitions, 1589 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:35,132 INFO L124 PetriNetUnfolderBase]: 484/960 cut-off events. [2024-06-27 23:33:35,132 INFO L125 PetriNetUnfolderBase]: For 159654/159654 co-relation queries the response was YES. [2024-06-27 23:33:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 960 events. 484/960 cut-off events. For 159654/159654 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5189 event pairs, 135 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 7893. Up to 879 conditions per place. [2024-06-27 23:33:35,141 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 157 selfloop transitions, 26 changer transitions 0/185 dead transitions. [2024-06-27 23:33:35,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 185 transitions, 2091 flow [2024-06-27 23:33:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:33:35,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:33:35,142 INFO L175 Difference]: Start difference. First operand has 270 places, 171 transitions, 1589 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:33:35,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 185 transitions, 2091 flow [2024-06-27 23:33:35,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 185 transitions, 2021 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 23:33:35,655 INFO L231 Difference]: Finished difference. Result has 262 places, 172 transitions, 1613 flow [2024-06-27 23:33:35,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=262, PETRI_TRANSITIONS=172} [2024-06-27 23:33:35,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-27 23:33:35,656 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 172 transitions, 1613 flow [2024-06-27 23:33:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:35,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:35,656 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 23:33:35,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:33:35,657 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:35,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:35,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1744709663, now seen corresponding path program 11 times [2024-06-27 23:33:35,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:35,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385548888] [2024-06-27 23:33:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:37,040 INFO 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 23:33:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385548888] [2024-06-27 23:33:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385548888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443896087] [2024-06-27 23:33:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:37,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:37,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:37,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 172 transitions, 1613 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:37,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:37,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:37,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:37,495 INFO L124 PetriNetUnfolderBase]: 500/996 cut-off events. [2024-06-27 23:33:37,495 INFO L125 PetriNetUnfolderBase]: For 174755/174755 co-relation queries the response was YES. [2024-06-27 23:33:37,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8029 conditions, 996 events. 500/996 cut-off events. For 174755/174755 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5456 event pairs, 139 based on Foata normal form. 10/1005 useless extension candidates. Maximal degree in co-relation 7923. Up to 879 conditions per place. [2024-06-27 23:33:37,505 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 155 selfloop transitions, 21 changer transitions 11/190 dead transitions. [2024-06-27 23:33:37,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 190 transitions, 2161 flow [2024-06-27 23:33:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:33:37,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:33:37,506 INFO L175 Difference]: Start difference. First operand has 262 places, 172 transitions, 1613 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:33:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 190 transitions, 2161 flow [2024-06-27 23:33:38,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 190 transitions, 2083 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:38,041 INFO L231 Difference]: Finished difference. Result has 264 places, 169 transitions, 1563 flow [2024-06-27 23:33:38,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1563, PETRI_PLACES=264, PETRI_TRANSITIONS=169} [2024-06-27 23:33:38,042 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:33:38,042 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 169 transitions, 1563 flow [2024-06-27 23:33:38,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:38,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:38,042 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 23:33:38,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:33:38,042 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:38,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash 60537857, now seen corresponding path program 12 times [2024-06-27 23:33:38,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:38,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138001850] [2024-06-27 23:33:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:39,558 INFO 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 23:33:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138001850] [2024-06-27 23:33:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138001850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234408424] [2024-06-27 23:33:39,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:39,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:39,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 169 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:39,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:39,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:39,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:39,991 INFO L124 PetriNetUnfolderBase]: 490/982 cut-off events. [2024-06-27 23:33:39,991 INFO L125 PetriNetUnfolderBase]: For 178235/178235 co-relation queries the response was YES. [2024-06-27 23:33:39,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7928 conditions, 982 events. 490/982 cut-off events. For 178235/178235 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5382 event pairs, 134 based on Foata normal form. 10/991 useless extension candidates. Maximal degree in co-relation 7821. Up to 741 conditions per place. [2024-06-27 23:33:40,001 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 127 selfloop transitions, 49 changer transitions 11/190 dead transitions. [2024-06-27 23:33:40,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 190 transitions, 2335 flow [2024-06-27 23:33:40,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:40,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:33:40,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-27 23:33:40,002 INFO L175 Difference]: Start difference. First operand has 264 places, 169 transitions, 1563 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:33:40,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 190 transitions, 2335 flow [2024-06-27 23:33:40,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 190 transitions, 2285 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:40,532 INFO L231 Difference]: Finished difference. Result has 262 places, 166 transitions, 1601 flow [2024-06-27 23:33:40,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1601, PETRI_PLACES=262, PETRI_TRANSITIONS=166} [2024-06-27 23:33:40,532 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-27 23:33:40,532 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 166 transitions, 1601 flow [2024-06-27 23:33:40,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:40,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:40,533 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 23:33:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:33:40,533 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:40,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash 60353283, now seen corresponding path program 20 times [2024-06-27 23:33:40,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959371285] [2024-06-27 23:33:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:42,362 INFO 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 23:33:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959371285] [2024-06-27 23:33:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959371285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:42,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313393100] [2024-06-27 23:33:42,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:42,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:42,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:42,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 166 transitions, 1601 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:42,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:42,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:42,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:42,909 INFO L124 PetriNetUnfolderBase]: 504/1012 cut-off events. [2024-06-27 23:33:42,909 INFO L125 PetriNetUnfolderBase]: For 189461/189461 co-relation queries the response was YES. [2024-06-27 23:33:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9197 conditions, 1012 events. 504/1012 cut-off events. For 189461/189461 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5612 event pairs, 144 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 9091. Up to 719 conditions per place. [2024-06-27 23:33:42,919 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 135 selfloop transitions, 51 changer transitions 0/188 dead transitions. [2024-06-27 23:33:42,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 188 transitions, 2551 flow [2024-06-27 23:33:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:33:42,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-27 23:33:42,920 INFO L175 Difference]: Start difference. First operand has 262 places, 166 transitions, 1601 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:33:42,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 188 transitions, 2551 flow [2024-06-27 23:33:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 188 transitions, 2441 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:43,535 INFO L231 Difference]: Finished difference. Result has 259 places, 168 transitions, 1671 flow [2024-06-27 23:33:43,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=259, PETRI_TRANSITIONS=168} [2024-06-27 23:33:43,536 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:33:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 168 transitions, 1671 flow [2024-06-27 23:33:43,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:43,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:43,536 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 23:33:43,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:33:43,537 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:43,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1295684673, now seen corresponding path program 21 times [2024-06-27 23:33:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:43,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288540370] [2024-06-27 23:33:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:44,804 INFO 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 23:33:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288540370] [2024-06-27 23:33:44,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288540370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:44,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:44,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:33:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2186922] [2024-06-27 23:33:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:33:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:33:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:33:44,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:44,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 168 transitions, 1671 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:44,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:44,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:44,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:45,167 INFO L124 PetriNetUnfolderBase]: 524/1056 cut-off events. [2024-06-27 23:33:45,168 INFO L125 PetriNetUnfolderBase]: For 217559/217559 co-relation queries the response was YES. [2024-06-27 23:33:45,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1056 events. 524/1056 cut-off events. For 217559/217559 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5946 event pairs, 152 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 9351. Up to 817 conditions per place. [2024-06-27 23:33:45,177 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 44 changer transitions 7/188 dead transitions. [2024-06-27 23:33:45,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 188 transitions, 2441 flow [2024-06-27 23:33:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:33:45,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2024-06-27 23:33:45,179 INFO L175 Difference]: Start difference. First operand has 259 places, 168 transitions, 1671 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:33:45,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 188 transitions, 2441 flow [2024-06-27 23:33:45,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 188 transitions, 2297 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:45,825 INFO L231 Difference]: Finished difference. Result has 261 places, 167 transitions, 1644 flow [2024-06-27 23:33:45,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=261, PETRI_TRANSITIONS=167} [2024-06-27 23:33:45,826 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-27 23:33:45,826 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 167 transitions, 1644 flow [2024-06-27 23:33:45,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:45,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:45,826 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 23:33:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:33:45,826 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:45,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1295691617, now seen corresponding path program 13 times [2024-06-27 23:33:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893410852] [2024-06-27 23:33:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:47,742 INFO 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 23:33:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893410852] [2024-06-27 23:33:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893410852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:47,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786831444] [2024-06-27 23:33:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:47,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:47,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:47,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 167 transitions, 1644 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:47,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:47,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:48,329 INFO L124 PetriNetUnfolderBase]: 516/1044 cut-off events. [2024-06-27 23:33:48,329 INFO L125 PetriNetUnfolderBase]: For 213649/213649 co-relation queries the response was YES. [2024-06-27 23:33:48,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9328 conditions, 1044 events. 516/1044 cut-off events. For 213649/213649 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5884 event pairs, 156 based on Foata normal form. 10/1053 useless extension candidates. Maximal degree in co-relation 9223. Up to 817 conditions per place. [2024-06-27 23:33:48,339 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 40 changer transitions 12/188 dead transitions. [2024-06-27 23:33:48,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 188 transitions, 2412 flow [2024-06-27 23:33:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:33:48,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-27 23:33:48,341 INFO L175 Difference]: Start difference. First operand has 261 places, 167 transitions, 1644 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:33:48,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 188 transitions, 2412 flow [2024-06-27 23:33:49,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 188 transitions, 2302 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:49,030 INFO L231 Difference]: Finished difference. Result has 264 places, 164 transitions, 1598 flow [2024-06-27 23:33:49,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1598, PETRI_PLACES=264, PETRI_TRANSITIONS=164} [2024-06-27 23:33:49,031 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:33:49,031 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 164 transitions, 1598 flow [2024-06-27 23:33:49,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:49,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:49,031 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 23:33:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:33:49,031 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:49,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1656801131, now seen corresponding path program 22 times [2024-06-27 23:33:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572551705] [2024-06-27 23:33:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:50,743 INFO 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 23:33:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572551705] [2024-06-27 23:33:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572551705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090763235] [2024-06-27 23:33:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:50,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:50,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 164 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:50,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:50,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:50,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:51,126 INFO L124 PetriNetUnfolderBase]: 494/1002 cut-off events. [2024-06-27 23:33:51,126 INFO L125 PetriNetUnfolderBase]: For 190115/190115 co-relation queries the response was YES. [2024-06-27 23:33:51,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9113 conditions, 1002 events. 494/1002 cut-off events. For 190115/190115 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5577 event pairs, 153 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 9007. Up to 909 conditions per place. [2024-06-27 23:33:51,135 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 23 changer transitions 0/177 dead transitions. [2024-06-27 23:33:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 177 transitions, 2026 flow [2024-06-27 23:33:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:33:51,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:33:51,136 INFO L175 Difference]: Start difference. First operand has 264 places, 164 transitions, 1598 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:33:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 177 transitions, 2026 flow [2024-06-27 23:33:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 177 transitions, 1942 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:51,752 INFO L231 Difference]: Finished difference. Result has 261 places, 165 transitions, 1596 flow [2024-06-27 23:33:51,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1596, PETRI_PLACES=261, PETRI_TRANSITIONS=165} [2024-06-27 23:33:51,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-27 23:33:51,752 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 165 transitions, 1596 flow [2024-06-27 23:33:51,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:51,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:51,753 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 23:33:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:33:51,753 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:51,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 67032977, now seen corresponding path program 14 times [2024-06-27 23:33:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289562937] [2024-06-27 23:33:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:53,227 INFO 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 23:33:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289562937] [2024-06-27 23:33:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289562937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191280424] [2024-06-27 23:33:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:53,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:33:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 165 transitions, 1596 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:33:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:53,749 INFO L124 PetriNetUnfolderBase]: 506/1030 cut-off events. [2024-06-27 23:33:53,749 INFO L125 PetriNetUnfolderBase]: For 204429/204429 co-relation queries the response was YES. [2024-06-27 23:33:53,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9199 conditions, 1030 events. 506/1030 cut-off events. For 204429/204429 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5805 event pairs, 154 based on Foata normal form. 8/1037 useless extension candidates. Maximal degree in co-relation 9094. Up to 815 conditions per place. [2024-06-27 23:33:53,759 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 131 selfloop transitions, 38 changer transitions 12/184 dead transitions. [2024-06-27 23:33:53,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 184 transitions, 2286 flow [2024-06-27 23:33:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:53,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:33:53,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:33:53,760 INFO L175 Difference]: Start difference. First operand has 261 places, 165 transitions, 1596 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:33:53,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 184 transitions, 2286 flow [2024-06-27 23:33:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 184 transitions, 2214 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:54,366 INFO L231 Difference]: Finished difference. Result has 264 places, 162 transitions, 1585 flow [2024-06-27 23:33:54,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=264, PETRI_TRANSITIONS=162} [2024-06-27 23:33:54,366 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:33:54,366 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 162 transitions, 1585 flow [2024-06-27 23:33:54,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:54,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:54,366 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 23:33:54,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:33:54,367 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:54,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 657265891, now seen corresponding path program 23 times [2024-06-27 23:33:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999199566] [2024-06-27 23:33:54,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:55,965 INFO 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 23:33:55,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:55,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999199566] [2024-06-27 23:33:55,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999199566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:55,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:55,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:55,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366921773] [2024-06-27 23:33:55,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:55,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:56,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:33:56,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 162 transitions, 1585 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 23:33:56,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:56,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:33:56,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:56,510 INFO L124 PetriNetUnfolderBase]: 471/959 cut-off events. [2024-06-27 23:33:56,510 INFO L125 PetriNetUnfolderBase]: For 183528/183528 co-relation queries the response was YES. [2024-06-27 23:33:56,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7864 conditions, 959 events. 471/959 cut-off events. For 183528/183528 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5292 event pairs, 180 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 7758. Up to 858 conditions per place. [2024-06-27 23:33:56,518 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 146 selfloop transitions, 22 changer transitions 8/178 dead transitions. [2024-06-27 23:33:56,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 178 transitions, 2229 flow [2024-06-27 23:33:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 23:33:56,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:33:56,520 INFO L175 Difference]: Start difference. First operand has 264 places, 162 transitions, 1585 flow. Second operand 11 states and 110 transitions. [2024-06-27 23:33:56,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 178 transitions, 2229 flow [2024-06-27 23:33:57,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 178 transitions, 2121 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:57,024 INFO L231 Difference]: Finished difference. Result has 261 places, 159 transitions, 1508 flow [2024-06-27 23:33:57,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=261, PETRI_TRANSITIONS=159} [2024-06-27 23:33:57,024 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-27 23:33:57,024 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 159 transitions, 1508 flow [2024-06-27 23:33:57,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 23:33:57,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:57,025 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 23:33:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:33:57,025 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:57,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1525907537, now seen corresponding path program 15 times [2024-06-27 23:33:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93070439] [2024-06-27 23:33:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:58,796 INFO 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 23:33:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:58,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93070439] [2024-06-27 23:33:58,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93070439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:58,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:58,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533756084] [2024-06-27 23:33:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:58,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:33:58,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 159 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:33:58,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:58,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:33:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:59,490 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-27 23:33:59,490 INFO L125 PetriNetUnfolderBase]: For 176718/176718 co-relation queries the response was YES. [2024-06-27 23:33:59,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8248 conditions, 972 events. 474/972 cut-off events. For 176718/176718 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5370 event pairs, 189 based on Foata normal form. 8/979 useless extension candidates. Maximal degree in co-relation 8144. Up to 739 conditions per place. [2024-06-27 23:33:59,499 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 151 selfloop transitions, 20 changer transitions 11/184 dead transitions. [2024-06-27 23:33:59,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 184 transitions, 2392 flow [2024-06-27 23:33:59,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:33:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:33:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-27 23:33:59,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:33:59,500 INFO L175 Difference]: Start difference. First operand has 261 places, 159 transitions, 1508 flow. Second operand 13 states and 130 transitions. [2024-06-27 23:33:59,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 184 transitions, 2392 flow [2024-06-27 23:34:00,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 184 transitions, 2336 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:00,190 INFO L231 Difference]: Finished difference. Result has 264 places, 156 transitions, 1478 flow [2024-06-27 23:34:00,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1478, PETRI_PLACES=264, PETRI_TRANSITIONS=156} [2024-06-27 23:34:00,191 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-27 23:34:00,191 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 156 transitions, 1478 flow [2024-06-27 23:34:00,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:34:00,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:00,192 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 23:34:00,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:34:00,192 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:00,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1367558925, now seen corresponding path program 16 times [2024-06-27 23:34:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:00,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363178406] [2024-06-27 23:34:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:01,975 INFO 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 23:34:01,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363178406] [2024-06-27 23:34:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363178406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109837684] [2024-06-27 23:34:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:01,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:02,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:34:02,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 156 transitions, 1478 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:34:02,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:02,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:34:02,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:02,649 INFO L124 PetriNetUnfolderBase]: 442/908 cut-off events. [2024-06-27 23:34:02,650 INFO L125 PetriNetUnfolderBase]: For 154975/154975 co-relation queries the response was YES. [2024-06-27 23:34:02,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 908 events. 442/908 cut-off events. For 154975/154975 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4951 event pairs, 171 based on Foata normal form. 8/915 useless extension candidates. Maximal degree in co-relation 7205. Up to 839 conditions per place. [2024-06-27 23:34:02,658 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 145 selfloop transitions, 12 changer transitions 13/172 dead transitions. [2024-06-27 23:34:02,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 172 transitions, 1900 flow [2024-06-27 23:34:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:34:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:34:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-27 23:34:02,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30277777777777776 [2024-06-27 23:34:02,659 INFO L175 Difference]: Start difference. First operand has 264 places, 156 transitions, 1478 flow. Second operand 12 states and 109 transitions. [2024-06-27 23:34:02,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 172 transitions, 1900 flow [2024-06-27 23:34:03,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 172 transitions, 1858 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 23:34:03,202 INFO L231 Difference]: Finished difference. Result has 260 places, 152 transitions, 1439 flow [2024-06-27 23:34:03,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1439, PETRI_PLACES=260, PETRI_TRANSITIONS=152} [2024-06-27 23:34:03,203 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-27 23:34:03,203 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 152 transitions, 1439 flow [2024-06-27 23:34:03,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:34:03,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:03,203 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 23:34:03,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:34:03,204 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:03,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:03,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1082213287, now seen corresponding path program 1 times [2024-06-27 23:34:03,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:03,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251823371] [2024-06-27 23:34:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:03,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:05,145 INFO 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 23:34:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251823371] [2024-06-27 23:34:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251823371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:05,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113177531] [2024-06-27 23:34:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:05,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:34:05,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 152 transitions, 1439 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:34:05,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:05,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:34:05,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:05,671 INFO L124 PetriNetUnfolderBase]: 420/861 cut-off events. [2024-06-27 23:34:05,672 INFO L125 PetriNetUnfolderBase]: For 123380/123380 co-relation queries the response was YES. [2024-06-27 23:34:05,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6918 conditions, 861 events. 420/861 cut-off events. For 123380/123380 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4621 event pairs, 171 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 6815. Up to 821 conditions per place. [2024-06-27 23:34:05,679 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 141 selfloop transitions, 18 changer transitions 1/162 dead transitions. [2024-06-27 23:34:05,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 162 transitions, 1805 flow [2024-06-27 23:34:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 23:34:05,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31333333333333335 [2024-06-27 23:34:05,683 INFO L175 Difference]: Start difference. First operand has 260 places, 152 transitions, 1439 flow. Second operand 10 states and 94 transitions. [2024-06-27 23:34:05,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 162 transitions, 1805 flow [2024-06-27 23:34:06,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 162 transitions, 1761 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:06,148 INFO L231 Difference]: Finished difference. Result has 254 places, 152 transitions, 1438 flow [2024-06-27 23:34:06,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1438, PETRI_PLACES=254, PETRI_TRANSITIONS=152} [2024-06-27 23:34:06,149 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 225 predicate places. [2024-06-27 23:34:06,149 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 152 transitions, 1438 flow [2024-06-27 23:34:06,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 23:34:06,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:06,149 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 23:34:06,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:34:06,166 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:06,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1157621055, now seen corresponding path program 24 times [2024-06-27 23:34:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:06,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909499589] [2024-06-27 23:34:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:07,214 INFO 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 23:34:07,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:07,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909499589] [2024-06-27 23:34:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909499589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:07,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:07,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:07,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505850295] [2024-06-27 23:34:07,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:07,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:07,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:07,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 152 transitions, 1438 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:07,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:07,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:07,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:07,511 INFO L124 PetriNetUnfolderBase]: 425/877 cut-off events. [2024-06-27 23:34:07,512 INFO L125 PetriNetUnfolderBase]: For 135348/135348 co-relation queries the response was YES. [2024-06-27 23:34:07,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6757 conditions, 877 events. 425/877 cut-off events. For 135348/135348 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4739 event pairs, 101 based on Foata normal form. 8/884 useless extension candidates. Maximal degree in co-relation 6655. Up to 680 conditions per place. [2024-06-27 23:34:07,519 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 129 selfloop transitions, 11 changer transitions 29/172 dead transitions. [2024-06-27 23:34:07,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 172 transitions, 1868 flow [2024-06-27 23:34:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:34:07,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 23:34:07,520 INFO L175 Difference]: Start difference. First operand has 254 places, 152 transitions, 1438 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:34:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 172 transitions, 1868 flow [2024-06-27 23:34:07,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 172 transitions, 1816 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:07,927 INFO L231 Difference]: Finished difference. Result has 253 places, 136 transitions, 1258 flow [2024-06-27 23:34:07,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1258, PETRI_PLACES=253, PETRI_TRANSITIONS=136} [2024-06-27 23:34:07,928 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-27 23:34:07,928 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 136 transitions, 1258 flow [2024-06-27 23:34:07,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:07,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:07,928 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 23:34:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:34:07,928 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:07,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1583942521, now seen corresponding path program 25 times [2024-06-27 23:34:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788275692] [2024-06-27 23:34:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:09,186 INFO 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 23:34:09,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788275692] [2024-06-27 23:34:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788275692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:09,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108779106] [2024-06-27 23:34:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:09,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:09,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:09,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 136 transitions, 1258 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:09,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:09,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:09,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:09,507 INFO L124 PetriNetUnfolderBase]: 339/707 cut-off events. [2024-06-27 23:34:09,508 INFO L125 PetriNetUnfolderBase]: For 107112/107112 co-relation queries the response was YES. [2024-06-27 23:34:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 707 events. 339/707 cut-off events. For 107112/107112 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3635 event pairs, 72 based on Foata normal form. 10/716 useless extension candidates. Maximal degree in co-relation 5003. Up to 590 conditions per place. [2024-06-27 23:34:09,514 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 113 selfloop transitions, 6 changer transitions 30/152 dead transitions. [2024-06-27 23:34:09,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 152 transitions, 1656 flow [2024-06-27 23:34:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:34:09,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:34:09,515 INFO L175 Difference]: Start difference. First operand has 253 places, 136 transitions, 1258 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:34:09,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 152 transitions, 1656 flow [2024-06-27 23:34:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 152 transitions, 1570 flow, removed 6 selfloop flow, removed 19 redundant places. [2024-06-27 23:34:09,768 INFO L231 Difference]: Finished difference. Result has 230 places, 118 transitions, 997 flow [2024-06-27 23:34:09,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=230, PETRI_TRANSITIONS=118} [2024-06-27 23:34:09,769 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-27 23:34:09,769 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 118 transitions, 997 flow [2024-06-27 23:34:09,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:09,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:09,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:34:09,769 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:09,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1165148745, now seen corresponding path program 1 times [2024-06-27 23:34:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721202508] [2024-06-27 23:34:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:11,531 INFO 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 23:34:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721202508] [2024-06-27 23:34:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721202508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540021111] [2024-06-27 23:34:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:11,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:11,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 118 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:11,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:11,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:11,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:11,863 INFO L124 PetriNetUnfolderBase]: 306/630 cut-off events. [2024-06-27 23:34:11,863 INFO L125 PetriNetUnfolderBase]: For 81801/81801 co-relation queries the response was YES. [2024-06-27 23:34:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 630 events. 306/630 cut-off events. For 81801/81801 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3143 event pairs, 66 based on Foata normal form. 6/635 useless extension candidates. Maximal degree in co-relation 4397. Up to 530 conditions per place. [2024-06-27 23:34:11,868 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 20 changer transitions 11/134 dead transitions. [2024-06-27 23:34:11,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 134 transitions, 1355 flow [2024-06-27 23:34:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:34:11,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:34:11,869 INFO L175 Difference]: Start difference. First operand has 230 places, 118 transitions, 997 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:34:11,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 134 transitions, 1355 flow [2024-06-27 23:34:12,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 134 transitions, 1202 flow, removed 19 selfloop flow, removed 22 redundant places. [2024-06-27 23:34:12,073 INFO L231 Difference]: Finished difference. Result has 199 places, 115 transitions, 879 flow [2024-06-27 23:34:12,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=879, PETRI_PLACES=199, PETRI_TRANSITIONS=115} [2024-06-27 23:34:12,074 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:34:12,074 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 115 transitions, 879 flow [2024-06-27 23:34:12,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:12,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:12,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:12,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:34:12,075 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:12,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1435764026, now seen corresponding path program 1 times [2024-06-27 23:34:12,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:12,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677224079] [2024-06-27 23:34:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:12,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677224079] [2024-06-27 23:34:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677224079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269184056] [2024-06-27 23:34:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:13,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:13,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 115 transitions, 879 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:14,007 INFO L124 PetriNetUnfolderBase]: 298/614 cut-off events. [2024-06-27 23:34:14,007 INFO L125 PetriNetUnfolderBase]: For 69687/69687 co-relation queries the response was YES. [2024-06-27 23:34:14,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 614 events. 298/614 cut-off events. For 69687/69687 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3036 event pairs, 60 based on Foata normal form. 6/619 useless extension candidates. Maximal degree in co-relation 3873. Up to 512 conditions per place. [2024-06-27 23:34:14,011 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 97 selfloop transitions, 17 changer transitions 13/130 dead transitions. [2024-06-27 23:34:14,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 130 transitions, 1197 flow [2024-06-27 23:34:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:34:14,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:34:14,012 INFO L175 Difference]: Start difference. First operand has 199 places, 115 transitions, 879 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:34:14,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 130 transitions, 1197 flow [2024-06-27 23:34:14,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 130 transitions, 1151 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:14,164 INFO L231 Difference]: Finished difference. Result has 195 places, 109 transitions, 840 flow [2024-06-27 23:34:14,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=840, PETRI_PLACES=195, PETRI_TRANSITIONS=109} [2024-06-27 23:34:14,165 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-27 23:34:14,165 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 109 transitions, 840 flow [2024-06-27 23:34:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:14,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:14,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:14,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:34:14,165 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:14,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:14,166 INFO L85 PathProgramCache]: Analyzing trace with hash 971209335, now seen corresponding path program 2 times [2024-06-27 23:34:14,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:14,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230922870] [2024-06-27 23:34:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:14,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:15,889 INFO 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 23:34:15,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:15,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230922870] [2024-06-27 23:34:15,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230922870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:15,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:15,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884900549] [2024-06-27 23:34:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:15,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:15,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:16,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:16,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 109 transitions, 840 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:16,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:16,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:16,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:16,267 INFO L124 PetriNetUnfolderBase]: 284/588 cut-off events. [2024-06-27 23:34:16,267 INFO L125 PetriNetUnfolderBase]: For 65579/65579 co-relation queries the response was YES. [2024-06-27 23:34:16,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 588 events. 284/588 cut-off events. For 65579/65579 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2872 event pairs, 60 based on Foata normal form. 6/593 useless extension candidates. Maximal degree in co-relation 3743. Up to 502 conditions per place. [2024-06-27 23:34:16,272 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 93 selfloop transitions, 14 changer transitions 14/124 dead transitions. [2024-06-27 23:34:16,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 124 transitions, 1146 flow [2024-06-27 23:34:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:34:16,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:34:16,273 INFO L175 Difference]: Start difference. First operand has 195 places, 109 transitions, 840 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:34:16,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 124 transitions, 1146 flow [2024-06-27 23:34:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 124 transitions, 1096 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:16,420 INFO L231 Difference]: Finished difference. Result has 188 places, 103 transitions, 792 flow [2024-06-27 23:34:16,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=792, PETRI_PLACES=188, PETRI_TRANSITIONS=103} [2024-06-27 23:34:16,421 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 23:34:16,421 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 103 transitions, 792 flow [2024-06-27 23:34:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:16,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:16,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:16,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:34:16,422 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:16,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1228693729, now seen corresponding path program 3 times [2024-06-27 23:34:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344540167] [2024-06-27 23:34:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:18,132 INFO 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 23:34:18,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:18,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344540167] [2024-06-27 23:34:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344540167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:18,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:18,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767138008] [2024-06-27 23:34:18,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:18,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:18,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:18,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 103 transitions, 792 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:18,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:18,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:18,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:18,440 INFO L124 PetriNetUnfolderBase]: 270/566 cut-off events. [2024-06-27 23:34:18,441 INFO L125 PetriNetUnfolderBase]: For 59721/59721 co-relation queries the response was YES. [2024-06-27 23:34:18,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3620 conditions, 566 events. 270/566 cut-off events. For 59721/59721 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2754 event pairs, 58 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 3539. Up to 474 conditions per place. [2024-06-27 23:34:18,444 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 86 selfloop transitions, 8 changer transitions 21/118 dead transitions. [2024-06-27 23:34:18,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 118 transitions, 1062 flow [2024-06-27 23:34:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:34:18,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 23:34:18,445 INFO L175 Difference]: Start difference. First operand has 188 places, 103 transitions, 792 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:34:18,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 118 transitions, 1062 flow [2024-06-27 23:34:18,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 118 transitions, 1028 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:18,571 INFO L231 Difference]: Finished difference. Result has 184 places, 92 transitions, 707 flow [2024-06-27 23:34:18,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=707, PETRI_PLACES=184, PETRI_TRANSITIONS=92} [2024-06-27 23:34:18,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:34:18,572 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 92 transitions, 707 flow [2024-06-27 23:34:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:18,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:18,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:18,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:34:18,572 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:18,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:18,572 INFO L85 PathProgramCache]: Analyzing trace with hash -30955282, now seen corresponding path program 2 times [2024-06-27 23:34:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:18,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49411181] [2024-06-27 23:34:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:20,755 INFO 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 23:34:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49411181] [2024-06-27 23:34:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49411181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664643834] [2024-06-27 23:34:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:20,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:20,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:20,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:20,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:20,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 92 transitions, 707 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:20,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:20,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:21,113 INFO L124 PetriNetUnfolderBase]: 245/515 cut-off events. [2024-06-27 23:34:21,113 INFO L125 PetriNetUnfolderBase]: For 56013/56013 co-relation queries the response was YES. [2024-06-27 23:34:21,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 515 events. 245/515 cut-off events. For 56013/56013 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2428 event pairs, 61 based on Foata normal form. 8/522 useless extension candidates. Maximal degree in co-relation 3186. Up to 407 conditions per place. [2024-06-27 23:34:21,116 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 20 changer transitions 9/108 dead transitions. [2024-06-27 23:34:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 108 transitions, 1011 flow [2024-06-27 23:34:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:34:21,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 23:34:21,117 INFO L175 Difference]: Start difference. First operand has 184 places, 92 transitions, 707 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:34:21,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 108 transitions, 1011 flow [2024-06-27 23:34:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 108 transitions, 963 flow, removed 16 selfloop flow, removed 14 redundant places. [2024-06-27 23:34:21,209 INFO L231 Difference]: Finished difference. Result has 164 places, 89 transitions, 688 flow [2024-06-27 23:34:21,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=688, PETRI_PLACES=164, PETRI_TRANSITIONS=89} [2024-06-27 23:34:21,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 23:34:21,209 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 89 transitions, 688 flow [2024-06-27 23:34:21,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:21,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:21,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:21,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:34:21,210 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:21,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash -30961079, now seen corresponding path program 4 times [2024-06-27 23:34:21,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:21,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741397688] [2024-06-27 23:34:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741397688] [2024-06-27 23:34:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741397688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:23,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:23,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128530521] [2024-06-27 23:34:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:23,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:23,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 89 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:23,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:23,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:23,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:24,054 INFO L124 PetriNetUnfolderBase]: 221/467 cut-off events. [2024-06-27 23:34:24,055 INFO L125 PetriNetUnfolderBase]: For 29987/29987 co-relation queries the response was YES. [2024-06-27 23:34:24,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 467 events. 221/467 cut-off events. For 29987/29987 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2136 event pairs, 44 based on Foata normal form. 6/472 useless extension candidates. Maximal degree in co-relation 2514. Up to 362 conditions per place. [2024-06-27 23:34:24,058 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 72 selfloop transitions, 10 changer transitions 21/105 dead transitions. [2024-06-27 23:34:24,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 105 transitions, 968 flow [2024-06-27 23:34:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:34:24,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:34:24,059 INFO L175 Difference]: Start difference. First operand has 164 places, 89 transitions, 688 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:34:24,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 105 transitions, 968 flow [2024-06-27 23:34:24,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 105 transitions, 911 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:24,117 INFO L231 Difference]: Finished difference. Result has 161 places, 78 transitions, 563 flow [2024-06-27 23:34:24,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=161, PETRI_TRANSITIONS=78} [2024-06-27 23:34:24,117 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-27 23:34:24,118 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 78 transitions, 563 flow [2024-06-27 23:34:24,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:24,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:24,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:34:24,118 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:24,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -34680149, now seen corresponding path program 5 times [2024-06-27 23:34:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:24,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880371778] [2024-06-27 23:34:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:25,885 INFO 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 23:34:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:25,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880371778] [2024-06-27 23:34:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880371778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:25,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934271958] [2024-06-27 23:34:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:26,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:26,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 78 transitions, 563 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:26,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:26,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:26,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:26,293 INFO L124 PetriNetUnfolderBase]: 196/420 cut-off events. [2024-06-27 23:34:26,293 INFO L125 PetriNetUnfolderBase]: For 29639/29639 co-relation queries the response was YES. [2024-06-27 23:34:26,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 420 events. 196/420 cut-off events. For 29639/29639 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1871 event pairs, 38 based on Foata normal form. 6/425 useless extension candidates. Maximal degree in co-relation 2238. Up to 318 conditions per place. [2024-06-27 23:34:26,296 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 59 selfloop transitions, 2 changer transitions 31/94 dead transitions. [2024-06-27 23:34:26,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 94 transitions, 789 flow [2024-06-27 23:34:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:34:26,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:34:26,297 INFO L175 Difference]: Start difference. First operand has 161 places, 78 transitions, 563 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:34:26,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 94 transitions, 789 flow [2024-06-27 23:34:26,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 94 transitions, 744 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:26,351 INFO L231 Difference]: Finished difference. Result has 148 places, 62 transitions, 433 flow [2024-06-27 23:34:26,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=433, PETRI_PLACES=148, PETRI_TRANSITIONS=62} [2024-06-27 23:34:26,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-27 23:34:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 62 transitions, 433 flow [2024-06-27 23:34:26,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:26,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:26,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:34:26,352 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:26,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1799621379, now seen corresponding path program 6 times [2024-06-27 23:34:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655265082] [2024-06-27 23:34:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:28,381 INFO 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 23:34:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655265082] [2024-06-27 23:34:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655265082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:28,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:28,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359623199] [2024-06-27 23:34:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:28,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:28,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:28,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:28,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:28,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 62 transitions, 433 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:28,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:28,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:28,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:28,695 INFO L124 PetriNetUnfolderBase]: 163/346 cut-off events. [2024-06-27 23:34:28,696 INFO L125 PetriNetUnfolderBase]: For 25242/25242 co-relation queries the response was YES. [2024-06-27 23:34:28,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 346 events. 163/346 cut-off events. For 25242/25242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1463 event pairs, 38 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 1880. Up to 223 conditions per place. [2024-06-27 23:34:28,698 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 18 changer transitions 13/77 dead transitions. [2024-06-27 23:34:28,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 77 transitions, 661 flow [2024-06-27 23:34:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:34:28,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:34:28,699 INFO L175 Difference]: Start difference. First operand has 148 places, 62 transitions, 433 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:34:28,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 77 transitions, 661 flow [2024-06-27 23:34:28,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 77 transitions, 606 flow, removed 22 selfloop flow, removed 18 redundant places. [2024-06-27 23:34:28,732 INFO L231 Difference]: Finished difference. Result has 117 places, 58 transitions, 408 flow [2024-06-27 23:34:28,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=408, PETRI_PLACES=117, PETRI_TRANSITIONS=58} [2024-06-27 23:34:28,733 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-27 23:34:28,733 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 58 transitions, 408 flow [2024-06-27 23:34:28,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:28,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:28,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:34:28,733 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:28,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1317580783, now seen corresponding path program 7 times [2024-06-27 23:34:28,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:28,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732237156] [2024-06-27 23:34:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:28,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732237156] [2024-06-27 23:34:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732237156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:30,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220777466] [2024-06-27 23:34:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:31,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:31,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 58 transitions, 408 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:31,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:31,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:31,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:31,318 INFO L124 PetriNetUnfolderBase]: 154/327 cut-off events. [2024-06-27 23:34:31,318 INFO L125 PetriNetUnfolderBase]: For 14026/14026 co-relation queries the response was YES. [2024-06-27 23:34:31,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1667 conditions, 327 events. 154/327 cut-off events. For 14026/14026 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1356 event pairs, 38 based on Foata normal form. 6/333 useless extension candidates. Maximal degree in co-relation 1617. Up to 213 conditions per place. [2024-06-27 23:34:31,320 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 38 selfloop transitions, 19 changer transitions 13/72 dead transitions. [2024-06-27 23:34:31,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 72 transitions, 604 flow [2024-06-27 23:34:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:31,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:34:31,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:34:31,321 INFO L175 Difference]: Start difference. First operand has 117 places, 58 transitions, 408 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:34:31,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 72 transitions, 604 flow [2024-06-27 23:34:31,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 72 transitions, 560 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:31,342 INFO L231 Difference]: Finished difference. Result has 111 places, 54 transitions, 383 flow [2024-06-27 23:34:31,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=383, PETRI_PLACES=111, PETRI_TRANSITIONS=54} [2024-06-27 23:34:31,342 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-27 23:34:31,342 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 54 transitions, 383 flow [2024-06-27 23:34:31,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 23:34:31,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:31,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:31,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:34:31,343 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:31,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1600535875, now seen corresponding path program 8 times [2024-06-27 23:34:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:31,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923107861] [2024-06-27 23:34:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:33,137 INFO 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 23:34:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923107861] [2024-06-27 23:34:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923107861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:33,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:33,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498272826] [2024-06-27 23:34:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:33,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:33,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:33,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 54 transitions, 383 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:33,462 INFO L124 PetriNetUnfolderBase]: 144/309 cut-off events. [2024-06-27 23:34:33,463 INFO L125 PetriNetUnfolderBase]: For 11882/11882 co-relation queries the response was YES. [2024-06-27 23:34:33,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 309 events. 144/309 cut-off events. For 11882/11882 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1260 event pairs, 36 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 1508. Up to 189 conditions per place. [2024-06-27 23:34:33,464 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 35 selfloop transitions, 17 changer transitions 13/68 dead transitions. [2024-06-27 23:34:33,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 68 transitions, 559 flow [2024-06-27 23:34:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:34:33,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:34:33,465 INFO L175 Difference]: Start difference. First operand has 111 places, 54 transitions, 383 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:34:33,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 68 transitions, 559 flow [2024-06-27 23:34:33,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 68 transitions, 515 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:33,479 INFO L231 Difference]: Finished difference. Result has 107 places, 48 transitions, 341 flow [2024-06-27 23:34:33,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=341, PETRI_PLACES=107, PETRI_TRANSITIONS=48} [2024-06-27 23:34:33,479 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 23:34:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 48 transitions, 341 flow [2024-06-27 23:34:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:33,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:33,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:33,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:34:33,480 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1547225798, now seen corresponding path program 3 times [2024-06-27 23:34:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:33,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503801425] [2024-06-27 23:34:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:35,058 INFO 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 23:34:35,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503801425] [2024-06-27 23:34:35,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503801425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:35,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:35,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:35,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187171371] [2024-06-27 23:34:35,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:35,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:35,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 48 transitions, 341 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:35,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:35,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:35,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:35,294 INFO L124 PetriNetUnfolderBase]: 124/269 cut-off events. [2024-06-27 23:34:35,294 INFO L125 PetriNetUnfolderBase]: For 9648/9648 co-relation queries the response was YES. [2024-06-27 23:34:35,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 269 events. 124/269 cut-off events. For 9648/9648 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1041 event pairs, 31 based on Foata normal form. 6/275 useless extension candidates. Maximal degree in co-relation 1284. Up to 188 conditions per place. [2024-06-27 23:34:35,295 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 35 selfloop transitions, 11 changer transitions 12/61 dead transitions. [2024-06-27 23:34:35,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 61 transitions, 497 flow [2024-06-27 23:34:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:34:35,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 23:34:35,296 INFO L175 Difference]: Start difference. First operand has 107 places, 48 transitions, 341 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:34:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 61 transitions, 497 flow [2024-06-27 23:34:35,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 61 transitions, 447 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 23:34:35,306 INFO L231 Difference]: Finished difference. Result has 96 places, 44 transitions, 296 flow [2024-06-27 23:34:35,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=96, PETRI_TRANSITIONS=44} [2024-06-27 23:34:35,307 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-27 23:34:35,307 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 44 transitions, 296 flow [2024-06-27 23:34:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:35,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:35,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:35,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:34:35,307 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1554850155, now seen corresponding path program 9 times [2024-06-27 23:34:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732266541] [2024-06-27 23:34:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:37,268 INFO 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 23:34:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:37,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732266541] [2024-06-27 23:34:37,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732266541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:37,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:37,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720839239] [2024-06-27 23:34:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:37,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:37,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 44 transitions, 296 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:37,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:37,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:37,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:37,526 INFO L124 PetriNetUnfolderBase]: 113/248 cut-off events. [2024-06-27 23:34:37,527 INFO L125 PetriNetUnfolderBase]: For 6702/6702 co-relation queries the response was YES. [2024-06-27 23:34:37,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 248 events. 113/248 cut-off events. For 6702/6702 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 936 event pairs, 31 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1136. Up to 178 conditions per place. [2024-06-27 23:34:37,528 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 33 selfloop transitions, 9 changer transitions 13/58 dead transitions. [2024-06-27 23:34:37,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 58 transitions, 458 flow [2024-06-27 23:34:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:34:37,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 23:34:37,529 INFO L175 Difference]: Start difference. First operand has 96 places, 44 transitions, 296 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:34:37,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 58 transitions, 458 flow [2024-06-27 23:34:37,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 58 transitions, 422 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:37,535 INFO L231 Difference]: Finished difference. Result has 90 places, 40 transitions, 264 flow [2024-06-27 23:34:37,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=264, PETRI_PLACES=90, PETRI_TRANSITIONS=40} [2024-06-27 23:34:37,535 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-27 23:34:37,536 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 40 transitions, 264 flow [2024-06-27 23:34:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:37,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:37,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:37,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:34:37,536 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:37,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:37,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2042757717, now seen corresponding path program 10 times [2024-06-27 23:34:37,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:37,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878297337] [2024-06-27 23:34:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:37,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:39,506 INFO 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 23:34:39,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:39,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878297337] [2024-06-27 23:34:39,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878297337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:39,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:39,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:39,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689169829] [2024-06-27 23:34:39,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:39,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:39,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 40 transitions, 264 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:39,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:39,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:39,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:39,834 INFO L124 PetriNetUnfolderBase]: 104/229 cut-off events. [2024-06-27 23:34:39,834 INFO L125 PetriNetUnfolderBase]: For 5236/5236 co-relation queries the response was YES. [2024-06-27 23:34:39,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 229 events. 104/229 cut-off events. For 5236/5236 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 845 event pairs, 20 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 1024. Up to 154 conditions per place. [2024-06-27 23:34:39,835 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 33 selfloop transitions, 8 changer transitions 10/54 dead transitions. [2024-06-27 23:34:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 54 transitions, 408 flow [2024-06-27 23:34:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:34:39,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:34:39,836 INFO L175 Difference]: Start difference. First operand has 90 places, 40 transitions, 264 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:34:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 54 transitions, 408 flow [2024-06-27 23:34:39,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 54 transitions, 382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:39,841 INFO L231 Difference]: Finished difference. Result has 84 places, 37 transitions, 241 flow [2024-06-27 23:34:39,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=241, PETRI_PLACES=84, PETRI_TRANSITIONS=37} [2024-06-27 23:34:39,842 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 23:34:39,842 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 37 transitions, 241 flow [2024-06-27 23:34:39,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:39,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:39,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:39,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:34:39,842 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:39,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:39,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2037251187, now seen corresponding path program 11 times [2024-06-27 23:34:39,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:39,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061013371] [2024-06-27 23:34:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:39,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:41,829 INFO 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 23:34:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:41,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061013371] [2024-06-27 23:34:41,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061013371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:41,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:41,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695497980] [2024-06-27 23:34:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:41,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:41,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 37 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:41,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:41,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:41,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:42,053 INFO L124 PetriNetUnfolderBase]: 94/211 cut-off events. [2024-06-27 23:34:42,054 INFO L125 PetriNetUnfolderBase]: For 3964/3964 co-relation queries the response was YES. [2024-06-27 23:34:42,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 211 events. 94/211 cut-off events. For 3964/3964 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 768 event pairs, 29 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 932. Up to 150 conditions per place. [2024-06-27 23:34:42,055 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 24 selfloop transitions, 3 changer transitions 20/50 dead transitions. [2024-06-27 23:34:42,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 50 transitions, 375 flow [2024-06-27 23:34:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:34:42,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 23:34:42,056 INFO L175 Difference]: Start difference. First operand has 84 places, 37 transitions, 241 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:34:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 50 transitions, 375 flow [2024-06-27 23:34:42,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 50 transitions, 353 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:42,061 INFO L231 Difference]: Finished difference. Result has 80 places, 28 transitions, 175 flow [2024-06-27 23:34:42,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=175, PETRI_PLACES=80, PETRI_TRANSITIONS=28} [2024-06-27 23:34:42,061 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-27 23:34:42,061 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 28 transitions, 175 flow [2024-06-27 23:34:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:42,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:42,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:34:42,062 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:42,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 351460355, now seen corresponding path program 12 times [2024-06-27 23:34:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446120449] [2024-06-27 23:34:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:44,107 INFO 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 23:34:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446120449] [2024-06-27 23:34:44,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446120449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:44,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:44,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:44,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352243976] [2024-06-27 23:34:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:44,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:34:44,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 28 transitions, 175 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:44,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:44,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:34:44,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:44,401 INFO L124 PetriNetUnfolderBase]: 54/123 cut-off events. [2024-06-27 23:34:44,401 INFO L125 PetriNetUnfolderBase]: For 2270/2270 co-relation queries the response was YES. [2024-06-27 23:34:44,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 123 events. 54/123 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 322 event pairs, 12 based on Foata normal form. 6/129 useless extension candidates. Maximal degree in co-relation 523. Up to 61 conditions per place. [2024-06-27 23:34:44,401 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 17 selfloop transitions, 13 changer transitions 8/40 dead transitions. [2024-06-27 23:34:44,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 40 transitions, 283 flow [2024-06-27 23:34:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-27 23:34:44,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2787878787878788 [2024-06-27 23:34:44,402 INFO L175 Difference]: Start difference. First operand has 80 places, 28 transitions, 175 flow. Second operand 11 states and 92 transitions. [2024-06-27 23:34:44,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 40 transitions, 283 flow [2024-06-27 23:34:44,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 40 transitions, 258 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:44,404 INFO L231 Difference]: Finished difference. Result has 67 places, 26 transitions, 167 flow [2024-06-27 23:34:44,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=167, PETRI_PLACES=67, PETRI_TRANSITIONS=26} [2024-06-27 23:34:44,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-27 23:34:44,405 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 26 transitions, 167 flow [2024-06-27 23:34:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:44,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:44,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:44,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:34:44,405 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:44,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash 351466152, now seen corresponding path program 4 times [2024-06-27 23:34:44,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:44,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486388948] [2024-06-27 23:34:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:44,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:46,523 INFO 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 23:34:46,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486388948] [2024-06-27 23:34:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486388948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:46,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037929039] [2024-06-27 23:34:46,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:46,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:46,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 23:34:46,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 26 transitions, 167 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:46,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:46,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 23:34:46,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:46,937 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-27 23:34:46,937 INFO L125 PetriNetUnfolderBase]: For 527/527 co-relation queries the response was YES. [2024-06-27 23:34:46,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 75 events. 30/75 cut-off events. For 527/527 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 6 based on Foata normal form. 8/83 useless extension candidates. Maximal degree in co-relation 261. Up to 42 conditions per place. [2024-06-27 23:34:46,938 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-27 23:34:46,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 32 transitions, 217 flow [2024-06-27 23:34:46,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-27 23:34:46,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2545454545454545 [2024-06-27 23:34:46,939 INFO L175 Difference]: Start difference. First operand has 67 places, 26 transitions, 167 flow. Second operand 11 states and 84 transitions. [2024-06-27 23:34:46,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 32 transitions, 217 flow [2024-06-27 23:34:46,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 32 transitions, 163 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-27 23:34:46,939 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2024-06-27 23:34:46,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2024-06-27 23:34:46,945 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-27 23:34:46,945 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2024-06-27 23:34:46,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:46,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:34:46,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:34:46,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:34:46,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:34:46,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:34:46,954 INFO L445 BasicCegarLoop]: Path program histogram: [25, 22, 16, 12, 12, 11, 10, 10, 7, 7, 6, 6, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:46,956 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:34:46,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:34:46,959 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:34:46,959 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:34:46,960 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:34:46 BasicIcfg [2024-06-27 23:34:46,960 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:34:46,961 INFO L158 Benchmark]: Toolchain (without parser) took 342552.97ms. Allocated memory was 159.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 97.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 439.6MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,961 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:34:46,961 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:34:46,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.60ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 124.8MB in the end (delta: -27.0MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.07ms. Allocated memory is still 159.4MB. Free memory was 124.8MB in the beginning and 120.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,961 INFO L158 Benchmark]: Boogie Preprocessor took 56.80ms. Allocated memory is still 159.4MB. Free memory was 120.6MB in the beginning and 116.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,962 INFO L158 Benchmark]: RCFGBuilder took 636.20ms. Allocated memory is still 159.4MB. Free memory was 116.4MB in the beginning and 51.4MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,962 INFO L158 Benchmark]: TraceAbstraction took 341190.19ms. Allocated memory was 159.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 51.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 390.7MB. Max. memory is 16.1GB. [2024-06-27 23:34:46,963 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 100.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.60ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 124.8MB in the end (delta: -27.0MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.07ms. Allocated memory is still 159.4MB. Free memory was 124.8MB in the beginning and 120.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.80ms. Allocated memory is still 159.4MB. Free memory was 120.6MB in the beginning and 116.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 636.20ms. Allocated memory is still 159.4MB. Free memory was 116.4MB in the beginning and 51.4MB in the end (delta: 65.0MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * TraceAbstraction took 341190.19ms. Allocated memory was 159.4MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 51.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 390.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 341.1s, OverallIterations: 174, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 117.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6988 SdHoareTripleChecker+Valid, 38.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5764 mSDsluCounter, 2807 SdHoareTripleChecker+Invalid, 33.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1986 mSDsCounter, 1832 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55498 IncrementalHoareTripleChecker+Invalid, 57330 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1832 mSolverCounterUnsat, 821 mSDtfsCounter, 55498 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1599 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 1554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 45.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2828occurred in iteration=114, InterpolantAutomatonStates: 1534, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 219.6s InterpolantComputationTime, 2688 NumberOfCodeBlocks, 2688 NumberOfCodeBlocksAsserted, 174 NumberOfCheckSat, 2514 ConstructedInterpolants, 0 QuantifiedInterpolants, 123659 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 174 InterpolantComputations, 174 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:34:47,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE