./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 23:57:03,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:57:03,705 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:57:03,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:57:03,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:57:03,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:57:03,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:57:03,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:57:03,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:57:03,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:57:03,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:57:03,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:57:03,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:57:03,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:57:03,751 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:57:03,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:57:03,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:57:03,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:57:03,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:57:03,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:57:03,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:57:03,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:57:03,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:57:03,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:57:03,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:57:03,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:57:03,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:57:03,756 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:57:03,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:57:03,757 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:57:03,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:57:03,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:57:03,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:57:03,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:57:03,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:57:03,759 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:57:03,759 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:57:03,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:57:03,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:57:03,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:57:03,760 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:57:03,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:57:03,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:57:03,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:57:04,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:57:04,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:57:04,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:57:04,038 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:57:04,038 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:57:04,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 23:57:04,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:57:04,187 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:57:04,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:57:05,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:57:05,634 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:57:05,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:57:05,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af5c6cad/02001f61b8894f28a132e5dfba28d048/FLAG4ac67c868 [2024-06-27 23:57:05,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af5c6cad/02001f61b8894f28a132e5dfba28d048 [2024-06-27 23:57:05,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:57:05,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:57:05,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:57:05,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:57:05,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:57:05,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:57:04" (1/2) ... [2024-06-27 23:57:05,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2510fd4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:57:05, skipping insertion in model container [2024-06-27 23:57:05,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:57:04" (1/2) ... [2024-06-27 23:57:05,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@165f2074 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:57:05, skipping insertion in model container [2024-06-27 23:57:05,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:57:05" (2/2) ... [2024-06-27 23:57:05,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2510fd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:05, skipping insertion in model container [2024-06-27 23:57:05,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:57:05" (2/2) ... [2024-06-27 23:57:05,701 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:57:05,730 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:57:05,731 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (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_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 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$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:57:05,731 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (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_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 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$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:57:05,732 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:57:05,732 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-27 23:57:05,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:57:06,157 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:57:06,170 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:57:06,294 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:57:06,348 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:57:06,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06 WrapperNode [2024-06-27 23:57:06,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:57:06,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:57:06,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:57:06,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:57:06,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,424 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-27 23:57:06,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:57:06,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:57:06,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:57:06,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:57:06,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,475 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 23:57:06,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,497 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:57:06,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:57:06,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:57:06,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:57:06,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (1/1) ... [2024-06-27 23:57:06,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:57:06,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:57:06,541 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 23:57:06,567 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 23:57:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:57:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:57:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:57:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:57:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:57:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:57:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:57:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:57:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:57:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:57:06,586 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 23:57:06,747 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:57:06,750 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:57:07,098 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:57:07,099 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:57:07,293 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:57:07,293 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:57:07,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:57:07 BoogieIcfgContainer [2024-06-27 23:57:07,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:57:07,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:57:07,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:57:07,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:57:07,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:57:04" (1/4) ... [2024-06-27 23:57:07,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff4012 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:57:07, skipping insertion in model container [2024-06-27 23:57:07,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:57:05" (2/4) ... [2024-06-27 23:57:07,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff4012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:57:07, skipping insertion in model container [2024-06-27 23:57:07,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:57:06" (3/4) ... [2024-06-27 23:57:07,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff4012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:57:07, skipping insertion in model container [2024-06-27 23:57:07,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:57:07" (4/4) ... [2024-06-27 23:57:07,310 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 23:57:07,349 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:57:07,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:57:07,349 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:57:07,399 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:57:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 23:57:07,459 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-27 23:57:07,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:57:07,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:57:07,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 23:57:07,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-27 23:57:07,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:57:07,480 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;@406a7295, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:57:07,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:57:07,486 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:57:07,486 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:57:07,486 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:57:07,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:07,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:57:07,487 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 23:57:07,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash 324002771, now seen corresponding path program 1 times [2024-06-27 23:57:07,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:07,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302000703] [2024-06-27 23:57:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:07,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:08,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302000703] [2024-06-27 23:57:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302000703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:08,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:08,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:57:08,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656255586] [2024-06-27 23:57:08,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:08,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:57:08,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:57:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:57:08,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-27 23:57:08,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 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 23:57:08,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:08,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-27 23:57:08,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:08,940 INFO L124 PetriNetUnfolderBase]: 135/261 cut-off events. [2024-06-27 23:57:08,940 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:57:08,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 261 events. 135/261 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 947 event pairs, 79 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 516. Up to 243 conditions per place. [2024-06-27 23:57:08,946 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-27 23:57:08,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 109 flow [2024-06-27 23:57:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:57:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:57:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-27 23:57:08,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-27 23:57:08,959 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 49 transitions. [2024-06-27 23:57:08,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 109 flow [2024-06-27 23:57:08,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:08,964 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-27 23:57:08,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-27 23:57:08,969 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-27 23:57:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-27 23:57:08,969 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 23:57:08,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:08,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:08,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:57:08,970 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 23:57:08,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2129656104, now seen corresponding path program 1 times [2024-06-27 23:57:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806889860] [2024-06-27 23:57:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:09,641 INFO 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 23:57:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806889860] [2024-06-27 23:57:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806889860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:57:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693351979] [2024-06-27 23:57:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:09,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:57:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:57:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:57:09,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:09,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 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 23:57:09,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:09,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:09,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:09,805 INFO L124 PetriNetUnfolderBase]: 159/291 cut-off events. [2024-06-27 23:57:09,805 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 23:57:09,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 291 events. 159/291 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 995 event pairs, 79 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-27 23:57:09,811 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-27 23:57:09,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2024-06-27 23:57:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:57:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:57:09,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-27 23:57:09,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-06-27 23:57:09,813 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 60 transitions. [2024-06-27 23:57:09,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2024-06-27 23:57:09,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:57:09,815 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-27 23:57:09,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-27 23:57:09,816 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-27 23:57:09,816 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-27 23:57:09,816 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 23:57:09,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:57:09,817 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 23:57:09,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1594830878, now seen corresponding path program 1 times [2024-06-27 23:57:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121930846] [2024-06-27 23:57:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:10,393 INFO 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 23:57:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121930846] [2024-06-27 23:57:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121930846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:10,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:57:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876303983] [2024-06-27 23:57:10,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:10,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:57:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:57:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:57:10,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:10,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 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 23:57:10,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:10,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:10,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:10,567 INFO L124 PetriNetUnfolderBase]: 153/281 cut-off events. [2024-06-27 23:57:10,567 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-27 23:57:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 281 events. 153/281 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 948 event pairs, 43 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-27 23:57:10,570 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-27 23:57:10,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 205 flow [2024-06-27 23:57:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:57:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:57:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-27 23:57:10,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2024-06-27 23:57:10,574 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 74 transitions. [2024-06-27 23:57:10,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 205 flow [2024-06-27 23:57:10,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:10,579 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 115 flow [2024-06-27 23:57:10,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-27 23:57:10,579 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-06-27 23:57:10,580 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 115 flow [2024-06-27 23:57:10,580 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 23:57:10,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:10,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:10,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:57:10,580 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 23:57:10,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1527310829, now seen corresponding path program 1 times [2024-06-27 23:57:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907228054] [2024-06-27 23:57:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:10,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:11,843 INFO 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 23:57:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:11,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907228054] [2024-06-27 23:57:11,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907228054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:11,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:11,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:57:11,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756183058] [2024-06-27 23:57:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:57:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:57:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:57:11,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:11,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 115 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 23:57:11,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:11,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:11,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:12,028 INFO L124 PetriNetUnfolderBase]: 149/273 cut-off events. [2024-06-27 23:57:12,028 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-27 23:57:12,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 273 events. 149/273 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 906 event pairs, 24 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-27 23:57:12,030 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-27 23:57:12,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 219 flow [2024-06-27 23:57:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-27 23:57:12,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-06-27 23:57:12,032 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 115 flow. Second operand 6 states and 82 transitions. [2024-06-27 23:57:12,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 219 flow [2024-06-27 23:57:12,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 204 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:12,034 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 112 flow [2024-06-27 23:57:12,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-06-27 23:57:12,035 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-27 23:57:12,035 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 112 flow [2024-06-27 23:57:12,036 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 23:57:12,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:12,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:57:12,036 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 23:57:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2119854161, now seen corresponding path program 1 times [2024-06-27 23:57:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:12,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890719343] [2024-06-27 23:57:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:12,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:12,730 INFO 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 23:57:12,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:12,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890719343] [2024-06-27 23:57:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890719343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:12,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:12,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:57:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818043137] [2024-06-27 23:57:12,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:12,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:57:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:57:12,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:57:12,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:12,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:12,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:12,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:12,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:12,926 INFO L124 PetriNetUnfolderBase]: 147/273 cut-off events. [2024-06-27 23:57:12,926 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-27 23:57:12,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 273 events. 147/273 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 907 event pairs, 90 based on Foata normal form. 1/273 useless extension candidates. Maximal degree in co-relation 783. Up to 259 conditions per place. [2024-06-27 23:57:12,930 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 24 selfloop transitions, 8 changer transitions 0/34 dead transitions. [2024-06-27 23:57:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 202 flow [2024-06-27 23:57:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-06-27 23:57:12,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3390804597701149 [2024-06-27 23:57:12,932 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 112 flow. Second operand 6 states and 59 transitions. [2024-06-27 23:57:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 202 flow [2024-06-27 23:57:12,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 180 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:12,937 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 136 flow [2024-06-27 23:57:12,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-27 23:57:12,940 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-06-27 23:57:12,942 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 136 flow [2024-06-27 23:57:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:12,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:12,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:12,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:57:12,949 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 23:57:12,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1290970441, now seen corresponding path program 1 times [2024-06-27 23:57:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644898423] [2024-06-27 23:57:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:13,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:13,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644898423] [2024-06-27 23:57:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644898423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:13,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:57:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173464485] [2024-06-27 23:57:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:13,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:57:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:57:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:57:13,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:13,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 136 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 23:57:13,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:13,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:14,156 INFO L124 PetriNetUnfolderBase]: 145/270 cut-off events. [2024-06-27 23:57:14,156 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2024-06-27 23:57:14,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 270 events. 145/270 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 906 event pairs, 89 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 816. Up to 253 conditions per place. [2024-06-27 23:57:14,159 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 25 selfloop transitions, 9 changer transitions 0/36 dead transitions. [2024-06-27 23:57:14,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 222 flow [2024-06-27 23:57:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2024-06-27 23:57:14,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-27 23:57:14,162 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 136 flow. Second operand 6 states and 60 transitions. [2024-06-27 23:57:14,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 222 flow [2024-06-27 23:57:14,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 209 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:14,165 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 159 flow [2024-06-27 23:57:14,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-27 23:57:14,168 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2024-06-27 23:57:14,168 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 159 flow [2024-06-27 23:57:14,168 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 23:57:14,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:14,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:57:14,170 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 23:57:14,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1114402754, now seen corresponding path program 1 times [2024-06-27 23:57:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:14,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132832970] [2024-06-27 23:57:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:14,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:14,867 INFO 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 23:57:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132832970] [2024-06-27 23:57:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132832970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:57:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800503007] [2024-06-27 23:57:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:57:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:57:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:57:14,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:14,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 159 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 23:57:14,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:14,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:15,112 INFO L124 PetriNetUnfolderBase]: 152/283 cut-off events. [2024-06-27 23:57:15,112 INFO L125 PetriNetUnfolderBase]: For 653/653 co-relation queries the response was YES. [2024-06-27 23:57:15,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 937 conditions, 283 events. 152/283 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 953 event pairs, 80 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 916. Up to 257 conditions per place. [2024-06-27 23:57:15,115 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 32 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-06-27 23:57:15,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 293 flow [2024-06-27 23:57:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-27 23:57:15,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-27 23:57:15,117 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 159 flow. Second operand 7 states and 73 transitions. [2024-06-27 23:57:15,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 293 flow [2024-06-27 23:57:15,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 277 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:15,121 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 205 flow [2024-06-27 23:57:15,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-27 23:57:15,122 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-06-27 23:57:15,122 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 205 flow [2024-06-27 23:57:15,123 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 23:57:15,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:15,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:15,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:57:15,123 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 23:57:15,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -883309666, now seen corresponding path program 2 times [2024-06-27 23:57:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:15,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712612357] [2024-06-27 23:57:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712612357] [2024-06-27 23:57:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712612357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:15,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:15,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:57:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854657891] [2024-06-27 23:57:15,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:57:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:15,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:57:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:57:15,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:15,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 205 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 23:57:15,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:15,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:15,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:16,093 INFO L124 PetriNetUnfolderBase]: 155/288 cut-off events. [2024-06-27 23:57:16,093 INFO L125 PetriNetUnfolderBase]: For 883/883 co-relation queries the response was YES. [2024-06-27 23:57:16,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 288 events. 155/288 cut-off events. For 883/883 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 982 event pairs, 81 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 1018. Up to 262 conditions per place. [2024-06-27 23:57:16,095 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 31 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-27 23:57:16,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 330 flow [2024-06-27 23:57:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-27 23:57:16,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735632183908046 [2024-06-27 23:57:16,099 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 205 flow. Second operand 6 states and 65 transitions. [2024-06-27 23:57:16,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 330 flow [2024-06-27 23:57:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 303 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:16,103 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 234 flow [2024-06-27 23:57:16,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-27 23:57:16,105 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2024-06-27 23:57:16,105 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 234 flow [2024-06-27 23:57:16,105 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 23:57:16,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:16,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:57:16,106 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 23:57:16,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:16,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1365370992, now seen corresponding path program 3 times [2024-06-27 23:57:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548332421] [2024-06-27 23:57:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:16,881 INFO 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 23:57:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:16,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548332421] [2024-06-27 23:57:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548332421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:16,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:57:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885087168] [2024-06-27 23:57:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:57:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:57:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:57:16,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:16,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 234 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 23:57:16,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:16,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:16,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:17,072 INFO L124 PetriNetUnfolderBase]: 153/286 cut-off events. [2024-06-27 23:57:17,073 INFO L125 PetriNetUnfolderBase]: For 1114/1114 co-relation queries the response was YES. [2024-06-27 23:57:17,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 286 events. 153/286 cut-off events. For 1114/1114 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 975 event pairs, 83 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 1058. Up to 250 conditions per place. [2024-06-27 23:57:17,077 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 27 selfloop transitions, 18 changer transitions 0/47 dead transitions. [2024-06-27 23:57:17,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 352 flow [2024-06-27 23:57:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-27 23:57:17,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735632183908046 [2024-06-27 23:57:17,078 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 234 flow. Second operand 6 states and 65 transitions. [2024-06-27 23:57:17,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 352 flow [2024-06-27 23:57:17,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 330 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:17,083 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 273 flow [2024-06-27 23:57:17,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-27 23:57:17,084 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-06-27 23:57:17,084 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 273 flow [2024-06-27 23:57:17,084 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 23:57:17,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:17,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:57:17,085 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 23:57:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1864080268, now seen corresponding path program 1 times [2024-06-27 23:57:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480890424] [2024-06-27 23:57:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:18,293 INFO 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 23:57:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480890424] [2024-06-27 23:57:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480890424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832928762] [2024-06-27 23:57:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:18,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:18,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:18,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:18,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:18,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:18,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:18,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:18,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:18,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:18,526 INFO L124 PetriNetUnfolderBase]: 151/281 cut-off events. [2024-06-27 23:57:18,526 INFO L125 PetriNetUnfolderBase]: For 1328/1328 co-relation queries the response was YES. [2024-06-27 23:57:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 281 events. 151/281 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 952 event pairs, 84 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 1099. Up to 261 conditions per place. [2024-06-27 23:57:18,529 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-27 23:57:18,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 389 flow [2024-06-27 23:57:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 68 transitions. [2024-06-27 23:57:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33497536945812806 [2024-06-27 23:57:18,530 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 273 flow. Second operand 7 states and 68 transitions. [2024-06-27 23:57:18,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 389 flow [2024-06-27 23:57:18,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 344 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:18,533 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 269 flow [2024-06-27 23:57:18,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-06-27 23:57:18,535 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-27 23:57:18,535 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 269 flow [2024-06-27 23:57:18,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:18,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:18,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:18,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:57:18,536 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 23:57:18,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash -498187512, now seen corresponding path program 1 times [2024-06-27 23:57:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:18,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065843458] [2024-06-27 23:57:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:18,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:19,195 INFO 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 23:57:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065843458] [2024-06-27 23:57:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065843458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366064612] [2024-06-27 23:57:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:19,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:19,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 269 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 23:57:19,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:19,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:19,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:19,472 INFO L124 PetriNetUnfolderBase]: 158/293 cut-off events. [2024-06-27 23:57:19,472 INFO L125 PetriNetUnfolderBase]: For 1529/1529 co-relation queries the response was YES. [2024-06-27 23:57:19,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 293 events. 158/293 cut-off events. For 1529/1529 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1003 event pairs, 37 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1162. Up to 242 conditions per place. [2024-06-27 23:57:19,474 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 43 selfloop transitions, 19 changer transitions 0/64 dead transitions. [2024-06-27 23:57:19,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 461 flow [2024-06-27 23:57:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:57:19,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:57:19,476 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 269 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:57:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 461 flow [2024-06-27 23:57:19,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 436 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:19,479 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 329 flow [2024-06-27 23:57:19,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=329, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 23:57:19,480 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-06-27 23:57:19,480 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 329 flow [2024-06-27 23:57:19,480 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 23:57:19,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:19,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:19,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:57:19,481 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 23:57:19,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash -203501182, now seen corresponding path program 2 times [2024-06-27 23:57:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144762317] [2024-06-27 23:57:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:19,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:20,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144762317] [2024-06-27 23:57:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144762317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:20,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888269155] [2024-06-27 23:57:20,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:20,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:20,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 329 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 23:57:20,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:20,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:20,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:20,447 INFO L124 PetriNetUnfolderBase]: 169/312 cut-off events. [2024-06-27 23:57:20,447 INFO L125 PetriNetUnfolderBase]: For 1858/1858 co-relation queries the response was YES. [2024-06-27 23:57:20,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 312 events. 169/312 cut-off events. For 1858/1858 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1111 event pairs, 35 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1330. Up to 254 conditions per place. [2024-06-27 23:57:20,450 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 46 selfloop transitions, 21 changer transitions 0/69 dead transitions. [2024-06-27 23:57:20,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 543 flow [2024-06-27 23:57:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:57:20,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-27 23:57:20,452 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 329 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:57:20,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 543 flow [2024-06-27 23:57:20,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 525 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:20,456 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 428 flow [2024-06-27 23:57:20,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-27 23:57:20,457 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-06-27 23:57:20,457 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 428 flow [2024-06-27 23:57:20,457 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 23:57:20,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:20,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:20,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:57:20,458 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 23:57:20,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash 326597038, now seen corresponding path program 3 times [2024-06-27 23:57:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096768243] [2024-06-27 23:57:20,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:20,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:21,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:21,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096768243] [2024-06-27 23:57:21,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096768243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:21,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:21,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:21,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254420504] [2024-06-27 23:57:21,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:21,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:21,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:21,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:21,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 428 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 23:57:21,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:21,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:21,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:21,437 INFO L124 PetriNetUnfolderBase]: 177/326 cut-off events. [2024-06-27 23:57:21,438 INFO L125 PetriNetUnfolderBase]: For 2467/2467 co-relation queries the response was YES. [2024-06-27 23:57:21,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 326 events. 177/326 cut-off events. For 2467/2467 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1161 event pairs, 36 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1521. Up to 254 conditions per place. [2024-06-27 23:57:21,441 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 27 changer transitions 0/73 dead transitions. [2024-06-27 23:57:21,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 660 flow [2024-06-27 23:57:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:57:21,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-27 23:57:21,442 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 428 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:57:21,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 660 flow [2024-06-27 23:57:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 626 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:21,451 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 509 flow [2024-06-27 23:57:21,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-27 23:57:21,452 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-27 23:57:21,452 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 509 flow [2024-06-27 23:57:21,452 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 23:57:21,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:21,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:21,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:57:21,453 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 23:57:21,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -203381026, now seen corresponding path program 1 times [2024-06-27 23:57:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538092900] [2024-06-27 23:57:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:22,188 INFO 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 23:57:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538092900] [2024-06-27 23:57:22,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538092900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:22,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:22,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655846388] [2024-06-27 23:57:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:22,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:22,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:22,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:22,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:22,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:22,414 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-27 23:57:22,414 INFO L125 PetriNetUnfolderBase]: For 2951/2951 co-relation queries the response was YES. [2024-06-27 23:57:22,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 332 events. 180/332 cut-off events. For 2951/2951 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1184 event pairs, 57 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1646. Up to 297 conditions per place. [2024-06-27 23:57:22,417 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 54 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-27 23:57:22,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 683 flow [2024-06-27 23:57:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-27 23:57:22,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891625615763547 [2024-06-27 23:57:22,418 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 509 flow. Second operand 7 states and 79 transitions. [2024-06-27 23:57:22,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 683 flow [2024-06-27 23:57:22,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 644 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:22,426 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 526 flow [2024-06-27 23:57:22,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2024-06-27 23:57:22,426 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 49 predicate places. [2024-06-27 23:57:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 526 flow [2024-06-27 23:57:22,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:22,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:22,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:57:22,427 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 23:57:22,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1945234408, now seen corresponding path program 4 times [2024-06-27 23:57:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:22,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380340698] [2024-06-27 23:57:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:22,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:23,144 INFO 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 23:57:23,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:23,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380340698] [2024-06-27 23:57:23,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380340698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:23,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:23,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:23,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729393982] [2024-06-27 23:57:23,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:23,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:23,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:23,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:23,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 526 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 23:57:23,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:23,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:23,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:23,461 INFO L124 PetriNetUnfolderBase]: 183/335 cut-off events. [2024-06-27 23:57:23,461 INFO L125 PetriNetUnfolderBase]: For 3228/3228 co-relation queries the response was YES. [2024-06-27 23:57:23,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 335 events. 183/335 cut-off events. For 3228/3228 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1186 event pairs, 39 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 1739. Up to 277 conditions per place. [2024-06-27 23:57:23,465 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 22 changer transitions 0/76 dead transitions. [2024-06-27 23:57:23,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 738 flow [2024-06-27 23:57:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:57:23,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-27 23:57:23,466 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 526 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:57:23,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 738 flow [2024-06-27 23:57:23,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 700 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:23,477 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 588 flow [2024-06-27 23:57:23,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=588, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-27 23:57:23,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 53 predicate places. [2024-06-27 23:57:23,478 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 588 flow [2024-06-27 23:57:23,479 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 23:57:23,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:23,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:23,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:57:23,479 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 23:57:23,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2100482150, now seen corresponding path program 5 times [2024-06-27 23:57:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:23,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475852064] [2024-06-27 23:57:23,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:23,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:24,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:24,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475852064] [2024-06-27 23:57:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475852064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:24,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595530707] [2024-06-27 23:57:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:24,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 588 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 23:57:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:24,536 INFO L124 PetriNetUnfolderBase]: 191/348 cut-off events. [2024-06-27 23:57:24,536 INFO L125 PetriNetUnfolderBase]: For 3926/3926 co-relation queries the response was YES. [2024-06-27 23:57:24,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 348 events. 191/348 cut-off events. For 3926/3926 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1243 event pairs, 39 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 1903. Up to 280 conditions per place. [2024-06-27 23:57:24,540 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-27 23:57:24,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 846 flow [2024-06-27 23:57:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 23:57:24,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039408866995074 [2024-06-27 23:57:24,542 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 588 flow. Second operand 7 states and 82 transitions. [2024-06-27 23:57:24,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 846 flow [2024-06-27 23:57:24,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 80 transitions, 798 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:24,550 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 664 flow [2024-06-27 23:57:24,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=664, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-06-27 23:57:24,550 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-06-27 23:57:24,551 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 664 flow [2024-06-27 23:57:24,551 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 23:57:24,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:24,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:57:24,552 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 23:57:24,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash -623171504, now seen corresponding path program 6 times [2024-06-27 23:57:24,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:24,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280765003] [2024-06-27 23:57:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:25,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:25,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280765003] [2024-06-27 23:57:25,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280765003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:25,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:25,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:25,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089752986] [2024-06-27 23:57:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:25,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:25,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 664 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 23:57:25,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:25,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:25,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:25,711 INFO L124 PetriNetUnfolderBase]: 189/345 cut-off events. [2024-06-27 23:57:25,712 INFO L125 PetriNetUnfolderBase]: For 4463/4463 co-relation queries the response was YES. [2024-06-27 23:57:25,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 345 events. 189/345 cut-off events. For 4463/4463 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1240 event pairs, 44 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1951. Up to 252 conditions per place. [2024-06-27 23:57:25,715 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 40 selfloop transitions, 39 changer transitions 0/81 dead transitions. [2024-06-27 23:57:25,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 902 flow [2024-06-27 23:57:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:25,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:57:25,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:57:25,718 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 664 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:57:25,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 902 flow [2024-06-27 23:57:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 81 transitions, 850 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:25,732 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 731 flow [2024-06-27 23:57:25,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-27 23:57:25,733 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-27 23:57:25,733 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 731 flow [2024-06-27 23:57:25,733 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 23:57:25,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:25,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:57:25,734 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 23:57:25,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -623171318, now seen corresponding path program 2 times [2024-06-27 23:57:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:25,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487546836] [2024-06-27 23:57:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:26,531 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 23:57:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487546836] [2024-06-27 23:57:26,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487546836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:26,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209237988] [2024-06-27 23:57:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:26,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:26,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 731 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:26,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:26,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:26,713 INFO L124 PetriNetUnfolderBase]: 192/352 cut-off events. [2024-06-27 23:57:26,714 INFO L125 PetriNetUnfolderBase]: For 4972/4972 co-relation queries the response was YES. [2024-06-27 23:57:26,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 352 events. 192/352 cut-off events. For 4972/4972 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1273 event pairs, 60 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 2068. Up to 301 conditions per place. [2024-06-27 23:57:26,717 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 63 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-27 23:57:26,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 983 flow [2024-06-27 23:57:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:57:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:57:26,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-27 23:57:26,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-27 23:57:26,720 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 731 flow. Second operand 6 states and 75 transitions. [2024-06-27 23:57:26,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 983 flow [2024-06-27 23:57:26,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 880 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:26,733 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 713 flow [2024-06-27 23:57:26,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-27 23:57:26,734 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-27 23:57:26,734 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 713 flow [2024-06-27 23:57:26,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:26,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:26,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:26,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:57:26,735 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 23:57:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -622934168, now seen corresponding path program 3 times [2024-06-27 23:57:26,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:26,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179796311] [2024-06-27 23:57:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:27,612 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 23:57:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179796311] [2024-06-27 23:57:27,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179796311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:27,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:27,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75973488] [2024-06-27 23:57:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:27,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:27,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:27,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 713 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 23:57:27,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:27,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:27,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:27,967 INFO L124 PetriNetUnfolderBase]: 190/350 cut-off events. [2024-06-27 23:57:27,967 INFO L125 PetriNetUnfolderBase]: For 5145/5145 co-relation queries the response was YES. [2024-06-27 23:57:27,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 350 events. 190/350 cut-off events. For 5145/5145 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1279 event pairs, 66 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 2028. Up to 324 conditions per place. [2024-06-27 23:57:27,971 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 68 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-06-27 23:57:27,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 83 transitions, 887 flow [2024-06-27 23:57:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-27 23:57:27,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399014778325123 [2024-06-27 23:57:27,973 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 713 flow. Second operand 7 states and 69 transitions. [2024-06-27 23:57:27,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 83 transitions, 887 flow [2024-06-27 23:57:27,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 83 transitions, 844 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:27,987 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 704 flow [2024-06-27 23:57:27,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=704, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-06-27 23:57:27,987 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-27 23:57:27,987 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 704 flow [2024-06-27 23:57:27,988 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 23:57:27,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:27,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:57:27,988 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 23:57:27,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -622925240, now seen corresponding path program 1 times [2024-06-27 23:57:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119408361] [2024-06-27 23:57:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:29,519 INFO 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 23:57:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119408361] [2024-06-27 23:57:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119408361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:29,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:57:29,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434230595] [2024-06-27 23:57:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:57:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:57:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:57:29,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:29,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:29,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:29,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:29,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:29,820 INFO L124 PetriNetUnfolderBase]: 187/345 cut-off events. [2024-06-27 23:57:29,820 INFO L125 PetriNetUnfolderBase]: For 5434/5434 co-relation queries the response was YES. [2024-06-27 23:57:29,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 345 events. 187/345 cut-off events. For 5434/5434 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1252 event pairs, 65 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 1996. Up to 316 conditions per place. [2024-06-27 23:57:29,824 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 71 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-27 23:57:29,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 886 flow [2024-06-27 23:57:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-06-27 23:57:29,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3232758620689655 [2024-06-27 23:57:29,827 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 704 flow. Second operand 8 states and 75 transitions. [2024-06-27 23:57:29,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 886 flow [2024-06-27 23:57:29,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 85 transitions, 860 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:29,838 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 706 flow [2024-06-27 23:57:29,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=706, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-06-27 23:57:29,838 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-06-27 23:57:29,839 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 706 flow [2024-06-27 23:57:29,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:29,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:29,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:29,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:57:29,839 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 23:57:29,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1982847809, now seen corresponding path program 1 times [2024-06-27 23:57:29,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084298369] [2024-06-27 23:57:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:29,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:30,640 INFO 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 23:57:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084298369] [2024-06-27 23:57:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084298369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:30,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:30,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073490795] [2024-06-27 23:57:30,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:30,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:30,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:30,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:30,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 706 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 23:57:30,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:30,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:30,941 INFO L124 PetriNetUnfolderBase]: 194/356 cut-off events. [2024-06-27 23:57:30,942 INFO L125 PetriNetUnfolderBase]: For 5762/5762 co-relation queries the response was YES. [2024-06-27 23:57:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 356 events. 194/356 cut-off events. For 5762/5762 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1289 event pairs, 50 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 2094. Up to 291 conditions per place. [2024-06-27 23:57:30,949 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-27 23:57:30,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 967 flow [2024-06-27 23:57:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:57:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:57:30,950 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 706 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:57:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 967 flow [2024-06-27 23:57:30,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 94 transitions, 937 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:30,963 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 785 flow [2024-06-27 23:57:30,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=785, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-06-27 23:57:30,964 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2024-06-27 23:57:30,964 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 785 flow [2024-06-27 23:57:30,964 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 23:57:30,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:30,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:30,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:57:30,965 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 23:57:30,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1736075802, now seen corresponding path program 1 times [2024-06-27 23:57:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383854777] [2024-06-27 23:57:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:31,771 INFO 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 23:57:31,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:31,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383854777] [2024-06-27 23:57:31,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383854777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:31,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:31,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:31,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611209493] [2024-06-27 23:57:31,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:31,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:31,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:31,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:31,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:31,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:31,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 785 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 23:57:31,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:31,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:31,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:31,990 INFO L124 PetriNetUnfolderBase]: 206/374 cut-off events. [2024-06-27 23:57:31,991 INFO L125 PetriNetUnfolderBase]: For 6691/6691 co-relation queries the response was YES. [2024-06-27 23:57:31,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 374 events. 206/374 cut-off events. For 6691/6691 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1368 event pairs, 35 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 2282. Up to 287 conditions per place. [2024-06-27 23:57:31,995 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 66 selfloop transitions, 30 changer transitions 0/99 dead transitions. [2024-06-27 23:57:31,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 1109 flow [2024-06-27 23:57:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:57:31,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46798029556650245 [2024-06-27 23:57:31,997 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 785 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:57:31,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 1109 flow [2024-06-27 23:57:32,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 1047 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:32,010 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 851 flow [2024-06-27 23:57:32,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=851, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2024-06-27 23:57:32,011 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 74 predicate places. [2024-06-27 23:57:32,011 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 851 flow [2024-06-27 23:57:32,011 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 23:57:32,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:32,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:57:32,012 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 23:57:32,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1719422137, now seen corresponding path program 2 times [2024-06-27 23:57:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:32,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366332934] [2024-06-27 23:57:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366332934] [2024-06-27 23:57:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366332934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:33,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:33,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:33,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420430235] [2024-06-27 23:57:33,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:33,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:33,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:33,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:33,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:33,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 851 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 23:57:33,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:33,370 INFO L124 PetriNetUnfolderBase]: 209/380 cut-off events. [2024-06-27 23:57:33,371 INFO L125 PetriNetUnfolderBase]: For 7393/7393 co-relation queries the response was YES. [2024-06-27 23:57:33,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2464 conditions, 380 events. 209/380 cut-off events. For 7393/7393 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1408 event pairs, 36 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 2414. Up to 316 conditions per place. [2024-06-27 23:57:33,375 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2024-06-27 23:57:33,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 1116 flow [2024-06-27 23:57:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:33,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:57:33,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-27 23:57:33,377 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 851 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:57:33,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 1116 flow [2024-06-27 23:57:33,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 100 transitions, 1072 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:33,396 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 910 flow [2024-06-27 23:57:33,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=910, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-06-27 23:57:33,396 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 79 predicate places. [2024-06-27 23:57:33,397 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 910 flow [2024-06-27 23:57:33,397 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 23:57:33,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:33,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:33,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:57:33,397 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 23:57:33,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1547851707, now seen corresponding path program 3 times [2024-06-27 23:57:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301625473] [2024-06-27 23:57:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:34,405 INFO 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 23:57:34,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:34,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301625473] [2024-06-27 23:57:34,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301625473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:34,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:34,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:34,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795266829] [2024-06-27 23:57:34,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:34,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:34,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:34,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:34,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:34,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:34,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 910 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 23:57:34,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:34,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:34,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:34,736 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2024-06-27 23:57:34,737 INFO L125 PetriNetUnfolderBase]: For 7722/7722 co-relation queries the response was YES. [2024-06-27 23:57:34,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 376 events. 207/376 cut-off events. For 7722/7722 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1377 event pairs, 31 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 2420. Up to 313 conditions per place. [2024-06-27 23:57:34,741 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 25 changer transitions 0/99 dead transitions. [2024-06-27 23:57:34,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 1134 flow [2024-06-27 23:57:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:57:34,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-27 23:57:34,743 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 910 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:57:34,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 1134 flow [2024-06-27 23:57:34,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 99 transitions, 1054 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:34,757 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 888 flow [2024-06-27 23:57:34,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2024-06-27 23:57:34,758 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 81 predicate places. [2024-06-27 23:57:34,758 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 888 flow [2024-06-27 23:57:34,758 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 23:57:34,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:34,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:34,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:57:34,759 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 23:57:34,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:34,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2013568611, now seen corresponding path program 4 times [2024-06-27 23:57:34,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:34,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297669130] [2024-06-27 23:57:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:34,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:35,785 INFO 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 23:57:35,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:35,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297669130] [2024-06-27 23:57:35,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297669130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:35,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380540598] [2024-06-27 23:57:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:35,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:35,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 888 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 23:57:35,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:35,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:35,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:36,106 INFO L124 PetriNetUnfolderBase]: 210/381 cut-off events. [2024-06-27 23:57:36,107 INFO L125 PetriNetUnfolderBase]: For 8323/8323 co-relation queries the response was YES. [2024-06-27 23:57:36,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2516 conditions, 381 events. 210/381 cut-off events. For 8323/8323 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1403 event pairs, 33 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 2462. Up to 318 conditions per place. [2024-06-27 23:57:36,111 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-06-27 23:57:36,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 1157 flow [2024-06-27 23:57:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:57:36,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:57:36,113 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 888 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:57:36,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 1157 flow [2024-06-27 23:57:36,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 1094 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:36,131 INFO L231 Difference]: Finished difference. Result has 111 places, 90 transitions, 926 flow [2024-06-27 23:57:36,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=111, PETRI_TRANSITIONS=90} [2024-06-27 23:57:36,132 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 83 predicate places. [2024-06-27 23:57:36,132 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 90 transitions, 926 flow [2024-06-27 23:57:36,132 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 23:57:36,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:36,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:36,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:57:36,133 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 23:57:36,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:36,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2009849386, now seen corresponding path program 2 times [2024-06-27 23:57:36,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:36,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493419230] [2024-06-27 23:57:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:36,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:36,815 INFO 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 23:57:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493419230] [2024-06-27 23:57:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493419230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:36,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:36,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245288415] [2024-06-27 23:57:36,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:36,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:36,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:36,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 90 transitions, 926 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 23:57:36,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:36,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:36,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:37,010 INFO L124 PetriNetUnfolderBase]: 237/425 cut-off events. [2024-06-27 23:57:37,010 INFO L125 PetriNetUnfolderBase]: For 10581/10581 co-relation queries the response was YES. [2024-06-27 23:57:37,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 425 events. 237/425 cut-off events. For 10581/10581 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1604 event pairs, 36 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 2843. Up to 270 conditions per place. [2024-06-27 23:57:37,016 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 71 selfloop transitions, 37 changer transitions 0/111 dead transitions. [2024-06-27 23:57:37,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 1394 flow [2024-06-27 23:57:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-27 23:57:37,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-06-27 23:57:37,017 INFO L175 Difference]: Start difference. First operand has 111 places, 90 transitions, 926 flow. Second operand 7 states and 98 transitions. [2024-06-27 23:57:37,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 111 transitions, 1394 flow [2024-06-27 23:57:37,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 1324 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:37,033 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 1035 flow [2024-06-27 23:57:37,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1035, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-06-27 23:57:37,034 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 85 predicate places. [2024-06-27 23:57:37,034 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 1035 flow [2024-06-27 23:57:37,034 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 23:57:37,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:37,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:37,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:57:37,035 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 23:57:37,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2009843806, now seen corresponding path program 3 times [2024-06-27 23:57:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482669135] [2024-06-27 23:57:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:37,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:37,814 INFO 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 23:57:37,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482669135] [2024-06-27 23:57:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482669135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:37,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:37,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970832592] [2024-06-27 23:57:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:37,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:37,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:37,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 1035 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 23:57:37,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:37,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:37,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:38,046 INFO L124 PetriNetUnfolderBase]: 235/422 cut-off events. [2024-06-27 23:57:38,046 INFO L125 PetriNetUnfolderBase]: For 10934/10934 co-relation queries the response was YES. [2024-06-27 23:57:38,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 422 events. 235/422 cut-off events. For 10934/10934 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1589 event pairs, 35 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 2916. Up to 305 conditions per place. [2024-06-27 23:57:38,052 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 68 selfloop transitions, 43 changer transitions 0/113 dead transitions. [2024-06-27 23:57:38,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 113 transitions, 1448 flow [2024-06-27 23:57:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 23:57:38,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433497536945813 [2024-06-27 23:57:38,054 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 1035 flow. Second operand 7 states and 90 transitions. [2024-06-27 23:57:38,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 113 transitions, 1448 flow [2024-06-27 23:57:38,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 1388 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 23:57:38,072 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 1152 flow [2024-06-27 23:57:38,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1152, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-27 23:57:38,073 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 91 predicate places. [2024-06-27 23:57:38,073 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 1152 flow [2024-06-27 23:57:38,073 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 23:57:38,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:38,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:38,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:57:38,074 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 23:57:38,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:38,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2009843589, now seen corresponding path program 1 times [2024-06-27 23:57:38,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:38,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970538000] [2024-06-27 23:57:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:38,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:38,984 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 23:57:38,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:38,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970538000] [2024-06-27 23:57:38,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970538000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:38,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:57:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691831050] [2024-06-27 23:57:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:38,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:57:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:57:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:57:39,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:39,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 1152 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 23:57:39,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:39,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:39,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:39,224 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-27 23:57:39,224 INFO L125 PetriNetUnfolderBase]: For 12007/12007 co-relation queries the response was YES. [2024-06-27 23:57:39,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 439 events. 245/439 cut-off events. For 12007/12007 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1669 event pairs, 33 based on Foata normal form. 3/441 useless extension candidates. Maximal degree in co-relation 3045. Up to 261 conditions per place. [2024-06-27 23:57:39,229 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 63 selfloop transitions, 52 changer transitions 0/118 dead transitions. [2024-06-27 23:57:39,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 118 transitions, 1563 flow [2024-06-27 23:57:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-27 23:57:39,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2024-06-27 23:57:39,231 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 1152 flow. Second operand 7 states and 98 transitions. [2024-06-27 23:57:39,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 118 transitions, 1563 flow [2024-06-27 23:57:39,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 118 transitions, 1476 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:39,257 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 1221 flow [2024-06-27 23:57:39,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1221, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2024-06-27 23:57:39,263 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 94 predicate places. [2024-06-27 23:57:39,263 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 1221 flow [2024-06-27 23:57:39,264 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 23:57:39,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:39,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:39,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:57:39,264 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 23:57:39,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:39,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2009849541, now seen corresponding path program 5 times [2024-06-27 23:57:39,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:39,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908173615] [2024-06-27 23:57:39,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:39,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:40,223 INFO 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 23:57:40,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908173615] [2024-06-27 23:57:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908173615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:40,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:40,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840178256] [2024-06-27 23:57:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:40,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:40,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:40,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:40,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:40,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 1221 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 23:57:40,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:40,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:40,480 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-27 23:57:40,480 INFO L125 PetriNetUnfolderBase]: For 12301/12301 co-relation queries the response was YES. [2024-06-27 23:57:40,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3259 conditions, 444 events. 248/444 cut-off events. For 12301/12301 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1691 event pairs, 34 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 3199. Up to 360 conditions per place. [2024-06-27 23:57:40,485 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 81 selfloop transitions, 35 changer transitions 0/118 dead transitions. [2024-06-27 23:57:40,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 118 transitions, 1516 flow [2024-06-27 23:57:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:57:40,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-27 23:57:40,488 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 1221 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:57:40,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 118 transitions, 1516 flow [2024-06-27 23:57:40,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 118 transitions, 1459 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:40,513 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 1281 flow [2024-06-27 23:57:40,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1281, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-06-27 23:57:40,514 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 99 predicate places. [2024-06-27 23:57:40,514 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 1281 flow [2024-06-27 23:57:40,514 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 23:57:40,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:40,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:57:40,514 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 23:57:40,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash 956601487, now seen corresponding path program 6 times [2024-06-27 23:57:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972363463] [2024-06-27 23:57:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:41,427 INFO 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 23:57:41,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:41,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972363463] [2024-06-27 23:57:41,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972363463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:41,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:41,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:41,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742462953] [2024-06-27 23:57:41,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:41,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:41,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:41,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:41,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:41,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:41,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 1281 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 23:57:41,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:41,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:41,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:41,719 INFO L124 PetriNetUnfolderBase]: 243/436 cut-off events. [2024-06-27 23:57:41,719 INFO L125 PetriNetUnfolderBase]: For 12889/12889 co-relation queries the response was YES. [2024-06-27 23:57:41,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 436 events. 243/436 cut-off events. For 12889/12889 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1667 event pairs, 37 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 3098. Up to 370 conditions per place. [2024-06-27 23:57:41,723 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 88 selfloop transitions, 26 changer transitions 0/116 dead transitions. [2024-06-27 23:57:41,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 116 transitions, 1531 flow [2024-06-27 23:57:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:57:41,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:57:41,725 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 1281 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:57:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 116 transitions, 1531 flow [2024-06-27 23:57:41,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 116 transitions, 1421 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:41,749 INFO L231 Difference]: Finished difference. Result has 129 places, 108 transitions, 1232 flow [2024-06-27 23:57:41,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=129, PETRI_TRANSITIONS=108} [2024-06-27 23:57:41,750 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 101 predicate places. [2024-06-27 23:57:41,750 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 108 transitions, 1232 flow [2024-06-27 23:57:41,750 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 23:57:41,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:41,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:41,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:57:41,750 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 23:57:41,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash 960410767, now seen corresponding path program 7 times [2024-06-27 23:57:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649286370] [2024-06-27 23:57:41,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:43,058 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 23:57:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:43,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649286370] [2024-06-27 23:57:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649286370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:43,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699616110] [2024-06-27 23:57:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:43,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:43,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 108 transitions, 1232 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 23:57:43,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:43,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:43,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:43,356 INFO L124 PetriNetUnfolderBase]: 240/431 cut-off events. [2024-06-27 23:57:43,356 INFO L125 PetriNetUnfolderBase]: For 12420/12420 co-relation queries the response was YES. [2024-06-27 23:57:43,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 431 events. 240/431 cut-off events. For 12420/12420 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1649 event pairs, 37 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 3009. Up to 356 conditions per place. [2024-06-27 23:57:43,361 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 83 selfloop transitions, 30 changer transitions 0/115 dead transitions. [2024-06-27 23:57:43,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 115 transitions, 1476 flow [2024-06-27 23:57:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:57:43,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:57:43,362 INFO L175 Difference]: Start difference. First operand has 129 places, 108 transitions, 1232 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:57:43,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 115 transitions, 1476 flow [2024-06-27 23:57:43,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 115 transitions, 1407 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:43,393 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 1229 flow [2024-06-27 23:57:43,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1229, PETRI_PLACES=132, PETRI_TRANSITIONS=108} [2024-06-27 23:57:43,393 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 104 predicate places. [2024-06-27 23:57:43,393 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 1229 flow [2024-06-27 23:57:43,393 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 23:57:43,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:43,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:43,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:57:43,394 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 23:57:43,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash 372176914, now seen corresponding path program 4 times [2024-06-27 23:57:43,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676376270] [2024-06-27 23:57:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:43,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676376270] [2024-06-27 23:57:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676376270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946721686] [2024-06-27 23:57:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:44,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 108 transitions, 1229 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 23:57:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:44,429 INFO L124 PetriNetUnfolderBase]: 248/444 cut-off events. [2024-06-27 23:57:44,429 INFO L125 PetriNetUnfolderBase]: For 13651/13651 co-relation queries the response was YES. [2024-06-27 23:57:44,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 444 events. 248/444 cut-off events. For 13651/13651 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1715 event pairs, 41 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 3139. Up to 300 conditions per place. [2024-06-27 23:57:44,433 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 77 selfloop transitions, 45 changer transitions 0/124 dead transitions. [2024-06-27 23:57:44,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1759 flow [2024-06-27 23:57:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:57:44,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2024-06-27 23:57:44,434 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 1229 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:57:44,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1759 flow [2024-06-27 23:57:44,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 1656 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:57:44,469 INFO L231 Difference]: Finished difference. Result has 132 places, 114 transitions, 1303 flow [2024-06-27 23:57:44,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1303, PETRI_PLACES=132, PETRI_TRANSITIONS=114} [2024-06-27 23:57:44,469 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 104 predicate places. [2024-06-27 23:57:44,469 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 114 transitions, 1303 flow [2024-06-27 23:57:44,469 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 23:57:44,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:44,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:57:44,470 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 23:57:44,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash 372177131, now seen corresponding path program 2 times [2024-06-27 23:57:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21600773] [2024-06-27 23:57:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:45,394 INFO 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 23:57:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21600773] [2024-06-27 23:57:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21600773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:45,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:45,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:45,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592974273] [2024-06-27 23:57:45,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:45,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:45,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:45,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:45,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 114 transitions, 1303 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 23:57:45,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:45,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:45,604 INFO L124 PetriNetUnfolderBase]: 259/463 cut-off events. [2024-06-27 23:57:45,604 INFO L125 PetriNetUnfolderBase]: For 15332/15332 co-relation queries the response was YES. [2024-06-27 23:57:45,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 463 events. 259/463 cut-off events. For 15332/15332 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1810 event pairs, 41 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 3299. Up to 306 conditions per place. [2024-06-27 23:57:45,608 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 79 selfloop transitions, 47 changer transitions 0/128 dead transitions. [2024-06-27 23:57:45,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 1815 flow [2024-06-27 23:57:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-27 23:57:45,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630541871921182 [2024-06-27 23:57:45,609 INFO L175 Difference]: Start difference. First operand has 132 places, 114 transitions, 1303 flow. Second operand 7 states and 94 transitions. [2024-06-27 23:57:45,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 1815 flow [2024-06-27 23:57:45,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1717 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 23:57:45,644 INFO L231 Difference]: Finished difference. Result has 136 places, 117 transitions, 1345 flow [2024-06-27 23:57:45,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1345, PETRI_PLACES=136, PETRI_TRANSITIONS=117} [2024-06-27 23:57:45,644 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-27 23:57:45,645 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 117 transitions, 1345 flow [2024-06-27 23:57:45,645 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 23:57:45,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:45,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:45,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:57:45,645 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 23:57:45,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2131089320, now seen corresponding path program 5 times [2024-06-27 23:57:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:45,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508765055] [2024-06-27 23:57:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:46,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508765055] [2024-06-27 23:57:46,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508765055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:46,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:46,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301149226] [2024-06-27 23:57:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:46,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:46,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:46,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 117 transitions, 1345 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 23:57:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:46,756 INFO L124 PetriNetUnfolderBase]: 257/462 cut-off events. [2024-06-27 23:57:46,756 INFO L125 PetriNetUnfolderBase]: For 14797/14797 co-relation queries the response was YES. [2024-06-27 23:57:46,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 462 events. 257/462 cut-off events. For 14797/14797 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1816 event pairs, 73 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 3321. Up to 431 conditions per place. [2024-06-27 23:57:46,761 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 104 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-27 23:57:46,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 123 transitions, 1601 flow [2024-06-27 23:57:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-27 23:57:46,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33620689655172414 [2024-06-27 23:57:46,762 INFO L175 Difference]: Start difference. First operand has 136 places, 117 transitions, 1345 flow. Second operand 8 states and 78 transitions. [2024-06-27 23:57:46,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 123 transitions, 1601 flow [2024-06-27 23:57:46,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 123 transitions, 1475 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:46,799 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 1261 flow [2024-06-27 23:57:46,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1261, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-06-27 23:57:46,800 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2024-06-27 23:57:46,800 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 1261 flow [2024-06-27 23:57:46,800 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 23:57:46,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:46,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:46,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:57:46,801 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 23:57:46,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2130822193, now seen corresponding path program 3 times [2024-06-27 23:57:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060867314] [2024-06-27 23:57:46,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:46,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:47,804 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 23:57:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:47,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060867314] [2024-06-27 23:57:47,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060867314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:47,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:47,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:47,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827612850] [2024-06-27 23:57:47,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:47,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:47,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:47,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:47,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 1261 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 23:57:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:48,174 INFO L124 PetriNetUnfolderBase]: 260/467 cut-off events. [2024-06-27 23:57:48,174 INFO L125 PetriNetUnfolderBase]: For 15378/15378 co-relation queries the response was YES. [2024-06-27 23:57:48,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3327 conditions, 467 events. 260/467 cut-off events. For 15378/15378 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1850 event pairs, 73 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 3261. Up to 432 conditions per place. [2024-06-27 23:57:48,179 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 108 selfloop transitions, 19 changer transitions 0/129 dead transitions. [2024-06-27 23:57:48,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 129 transitions, 1653 flow [2024-06-27 23:57:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:57:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:57:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 23:57:48,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:57:48,181 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 1261 flow. Second operand 9 states and 87 transitions. [2024-06-27 23:57:48,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 129 transitions, 1653 flow [2024-06-27 23:57:48,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 129 transitions, 1615 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:57:48,217 INFO L231 Difference]: Finished difference. Result has 141 places, 121 transitions, 1322 flow [2024-06-27 23:57:48,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=141, PETRI_TRANSITIONS=121} [2024-06-27 23:57:48,218 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 113 predicate places. [2024-06-27 23:57:48,218 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 121 transitions, 1322 flow [2024-06-27 23:57:48,218 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 23:57:48,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:48,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:57:48,219 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 23:57:48,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2138446550, now seen corresponding path program 6 times [2024-06-27 23:57:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:48,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607629358] [2024-06-27 23:57:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:48,912 INFO 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 23:57:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:48,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607629358] [2024-06-27 23:57:48,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607629358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:48,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:48,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870395560] [2024-06-27 23:57:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:48,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:48,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:48,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:48,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:57:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 121 transitions, 1322 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 23:57:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:48,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:57:48,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:49,138 INFO L124 PetriNetUnfolderBase]: 260/466 cut-off events. [2024-06-27 23:57:49,138 INFO L125 PetriNetUnfolderBase]: For 16203/16203 co-relation queries the response was YES. [2024-06-27 23:57:49,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 466 events. 260/466 cut-off events. For 16203/16203 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1824 event pairs, 41 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 3284. Up to 272 conditions per place. [2024-06-27 23:57:49,141 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 82 selfloop transitions, 51 changer transitions 0/135 dead transitions. [2024-06-27 23:57:49,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1822 flow [2024-06-27 23:57:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:57:49,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2024-06-27 23:57:49,142 INFO L175 Difference]: Start difference. First operand has 141 places, 121 transitions, 1322 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:57:49,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1822 flow [2024-06-27 23:57:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 135 transitions, 1764 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:49,175 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 1462 flow [2024-06-27 23:57:49,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1462, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2024-06-27 23:57:49,175 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2024-06-27 23:57:49,175 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 1462 flow [2024-06-27 23:57:49,176 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 23:57:49,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:49,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:49,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:57:49,176 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 23:57:49,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2138446705, now seen corresponding path program 8 times [2024-06-27 23:57:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:49,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56769725] [2024-06-27 23:57:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:49,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:50,218 INFO 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 23:57:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:50,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56769725] [2024-06-27 23:57:50,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56769725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:50,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:50,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472814618] [2024-06-27 23:57:50,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:50,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:50,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:50,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 1462 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 23:57:50,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:50,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:50,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:50,441 INFO L124 PetriNetUnfolderBase]: 257/460 cut-off events. [2024-06-27 23:57:50,441 INFO L125 PetriNetUnfolderBase]: For 16255/16255 co-relation queries the response was YES. [2024-06-27 23:57:50,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3409 conditions, 460 events. 257/460 cut-off events. For 16255/16255 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1799 event pairs, 42 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 3340. Up to 346 conditions per place. [2024-06-27 23:57:50,446 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 82 selfloop transitions, 49 changer transitions 0/133 dead transitions. [2024-06-27 23:57:50,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 133 transitions, 1751 flow [2024-06-27 23:57:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:57:50,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:57:50,448 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 1462 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:57:50,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 133 transitions, 1751 flow [2024-06-27 23:57:50,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 133 transitions, 1632 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:57:50,499 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 1462 flow [2024-06-27 23:57:50,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1462, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2024-06-27 23:57:50,499 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 120 predicate places. [2024-06-27 23:57:50,500 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 1462 flow [2024-06-27 23:57:50,500 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 23:57:50,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:50,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:50,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:57:50,500 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 23:57:50,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2131089103, now seen corresponding path program 4 times [2024-06-27 23:57:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:50,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426712727] [2024-06-27 23:57:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:51,440 INFO 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 23:57:51,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:51,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426712727] [2024-06-27 23:57:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426712727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:51,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82165182] [2024-06-27 23:57:51,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:51,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:51,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:51,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:51,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:51,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 1462 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 23:57:51,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:51,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:51,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:51,698 INFO L124 PetriNetUnfolderBase]: 261/469 cut-off events. [2024-06-27 23:57:51,698 INFO L125 PetriNetUnfolderBase]: For 17463/17463 co-relation queries the response was YES. [2024-06-27 23:57:51,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 469 events. 261/469 cut-off events. For 17463/17463 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1866 event pairs, 73 based on Foata normal form. 3/471 useless extension candidates. Maximal degree in co-relation 3334. Up to 429 conditions per place. [2024-06-27 23:57:51,702 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 115 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2024-06-27 23:57:51,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 1778 flow [2024-06-27 23:57:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-27 23:57:51,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3694581280788177 [2024-06-27 23:57:51,703 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 1462 flow. Second operand 7 states and 75 transitions. [2024-06-27 23:57:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 1778 flow [2024-06-27 23:57:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 136 transitions, 1646 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:51,752 INFO L231 Difference]: Finished difference. Result has 149 places, 129 transitions, 1400 flow [2024-06-27 23:57:51,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1400, PETRI_PLACES=149, PETRI_TRANSITIONS=129} [2024-06-27 23:57:51,753 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 121 predicate places. [2024-06-27 23:57:51,753 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 129 transitions, 1400 flow [2024-06-27 23:57:51,753 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 23:57:51,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:51,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:57:51,754 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 23:57:51,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 124826921, now seen corresponding path program 1 times [2024-06-27 23:57:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446944290] [2024-06-27 23:57:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:52,365 INFO 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 23:57:52,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:52,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446944290] [2024-06-27 23:57:52,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446944290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077776040] [2024-06-27 23:57:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:52,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:52,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:52,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:57:52,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 129 transitions, 1400 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 23:57:52,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:52,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:57:52,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:52,633 INFO L124 PetriNetUnfolderBase]: 245/463 cut-off events. [2024-06-27 23:57:52,633 INFO L125 PetriNetUnfolderBase]: For 19347/19348 co-relation queries the response was YES. [2024-06-27 23:57:52,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3305 conditions, 463 events. 245/463 cut-off events. For 19347/19348 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1970 event pairs, 22 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 3233. Up to 291 conditions per place. [2024-06-27 23:57:52,637 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 87 selfloop transitions, 25 changer transitions 0/144 dead transitions. [2024-06-27 23:57:52,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 144 transitions, 1688 flow [2024-06-27 23:57:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:57:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:57:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:57:52,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-27 23:57:52,639 INFO L175 Difference]: Start difference. First operand has 149 places, 129 transitions, 1400 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:57:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 144 transitions, 1688 flow [2024-06-27 23:57:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 144 transitions, 1640 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:52,684 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1445 flow [2024-06-27 23:57:52,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1445, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-27 23:57:52,685 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-27 23:57:52,685 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1445 flow [2024-06-27 23:57:52,685 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 23:57:52,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:52,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:52,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:57:52,686 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 23:57:52,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:52,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2001026305, now seen corresponding path program 2 times [2024-06-27 23:57:52,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:52,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890441921] [2024-06-27 23:57:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:52,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:53,524 INFO 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 23:57:53,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890441921] [2024-06-27 23:57:53,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890441921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:53,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:53,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:57:53,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661822290] [2024-06-27 23:57:53,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:53,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:57:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:57:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:57:53,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:53,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1445 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 23:57:53,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:53,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:53,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:53,859 INFO L124 PetriNetUnfolderBase]: 279/505 cut-off events. [2024-06-27 23:57:53,859 INFO L125 PetriNetUnfolderBase]: For 18945/18945 co-relation queries the response was YES. [2024-06-27 23:57:53,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 505 events. 279/505 cut-off events. For 18945/18945 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2102 event pairs, 27 based on Foata normal form. 2/506 useless extension candidates. Maximal degree in co-relation 3531. Up to 430 conditions per place. [2024-06-27 23:57:53,863 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 123 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2024-06-27 23:57:53,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 148 transitions, 1813 flow [2024-06-27 23:57:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:57:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:57:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:57:53,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-27 23:57:53,864 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1445 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:57:53,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 148 transitions, 1813 flow [2024-06-27 23:57:53,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 148 transitions, 1753 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:53,918 INFO L231 Difference]: Finished difference. Result has 156 places, 133 transitions, 1477 flow [2024-06-27 23:57:53,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1477, PETRI_PLACES=156, PETRI_TRANSITIONS=133} [2024-06-27 23:57:53,919 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-27 23:57:53,919 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 133 transitions, 1477 flow [2024-06-27 23:57:53,919 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 23:57:53,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:53,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:53,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:57:53,920 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 23:57:53,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:53,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1355373955, now seen corresponding path program 1 times [2024-06-27 23:57:53,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:53,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151358189] [2024-06-27 23:57:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:53,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151358189] [2024-06-27 23:57:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151358189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:54,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:57:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143868694] [2024-06-27 23:57:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:57:54,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:57:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:57:54,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:54,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 133 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 23:57:54,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:54,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:54,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:55,076 INFO L124 PetriNetUnfolderBase]: 277/504 cut-off events. [2024-06-27 23:57:55,076 INFO L125 PetriNetUnfolderBase]: For 17854/17854 co-relation queries the response was YES. [2024-06-27 23:57:55,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 504 events. 277/504 cut-off events. For 17854/17854 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2125 event pairs, 47 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 3451. Up to 413 conditions per place. [2024-06-27 23:57:55,079 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 108 selfloop transitions, 35 changer transitions 0/145 dead transitions. [2024-06-27 23:57:55,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 145 transitions, 1806 flow [2024-06-27 23:57:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:57:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:57:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 23:57:55,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2024-06-27 23:57:55,088 INFO L175 Difference]: Start difference. First operand has 156 places, 133 transitions, 1477 flow. Second operand 7 states and 81 transitions. [2024-06-27 23:57:55,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 145 transitions, 1806 flow [2024-06-27 23:57:55,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 145 transitions, 1712 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 23:57:55,146 INFO L231 Difference]: Finished difference. Result has 157 places, 134 transitions, 1482 flow [2024-06-27 23:57:55,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1482, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2024-06-27 23:57:55,147 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 129 predicate places. [2024-06-27 23:57:55,148 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 1482 flow [2024-06-27 23:57:55,148 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 23:57:55,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:55,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:55,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:57:55,148 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 23:57:55,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2016373175, now seen corresponding path program 3 times [2024-06-27 23:57:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:55,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787865758] [2024-06-27 23:57:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:56,117 INFO 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 23:57:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787865758] [2024-06-27 23:57:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787865758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:57:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133269995] [2024-06-27 23:57:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:56,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:57:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:57:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:57:56,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:56,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 1482 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 23:57:56,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:56,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:56,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:56,386 INFO L124 PetriNetUnfolderBase]: 281/511 cut-off events. [2024-06-27 23:57:56,386 INFO L125 PetriNetUnfolderBase]: For 19616/19616 co-relation queries the response was YES. [2024-06-27 23:57:56,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 511 events. 281/511 cut-off events. For 19616/19616 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2144 event pairs, 33 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 3509. Up to 441 conditions per place. [2024-06-27 23:57:56,391 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 118 selfloop transitions, 29 changer transitions 0/149 dead transitions. [2024-06-27 23:57:56,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1844 flow [2024-06-27 23:57:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:57:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:57:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 23:57:56,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015325670498083 [2024-06-27 23:57:56,393 INFO L175 Difference]: Start difference. First operand has 157 places, 134 transitions, 1482 flow. Second operand 9 states and 94 transitions. [2024-06-27 23:57:56,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1844 flow [2024-06-27 23:57:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 149 transitions, 1775 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:57:56,470 INFO L231 Difference]: Finished difference. Result has 161 places, 135 transitions, 1509 flow [2024-06-27 23:57:56,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2024-06-27 23:57:56,473 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 133 predicate places. [2024-06-27 23:57:56,473 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 1509 flow [2024-06-27 23:57:56,474 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 23:57:56,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:56,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:56,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:57:56,474 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 23:57:56,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash 738763427, now seen corresponding path program 4 times [2024-06-27 23:57:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:56,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509454485] [2024-06-27 23:57:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:57,437 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 23:57:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509454485] [2024-06-27 23:57:57,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509454485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:57:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717887757] [2024-06-27 23:57:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:57:57,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:57:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:57:57,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:57,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 1509 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 23:57:57,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:57,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:57,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:57,802 INFO L124 PetriNetUnfolderBase]: 285/518 cut-off events. [2024-06-27 23:57:57,803 INFO L125 PetriNetUnfolderBase]: For 20901/20901 co-relation queries the response was YES. [2024-06-27 23:57:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 518 events. 285/518 cut-off events. For 20901/20901 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2194 event pairs, 28 based on Foata normal form. 2/519 useless extension candidates. Maximal degree in co-relation 3612. Up to 444 conditions per place. [2024-06-27 23:57:57,808 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 120 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2024-06-27 23:57:57,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 149 transitions, 1871 flow [2024-06-27 23:57:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:57:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:57:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:57:57,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-27 23:57:57,809 INFO L175 Difference]: Start difference. First operand has 161 places, 135 transitions, 1509 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:57:57,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 149 transitions, 1871 flow [2024-06-27 23:57:57,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 149 transitions, 1785 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:57:57,878 INFO L231 Difference]: Finished difference. Result has 163 places, 136 transitions, 1518 flow [2024-06-27 23:57:57,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1518, PETRI_PLACES=163, PETRI_TRANSITIONS=136} [2024-06-27 23:57:57,879 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places. [2024-06-27 23:57:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 136 transitions, 1518 flow [2024-06-27 23:57:57,879 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 23:57:57,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:57,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:57:57,879 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 23:57:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2119174435, now seen corresponding path program 5 times [2024-06-27 23:57:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873636189] [2024-06-27 23:57:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:57:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:57:58,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:57:58,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873636189] [2024-06-27 23:57:58,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873636189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:57:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:57:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:57:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345126850] [2024-06-27 23:57:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:57:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:57:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:57:58,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:57:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:57:58,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:57:58,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 136 transitions, 1518 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:58,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:57:58,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:57:58,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:57:59,162 INFO L124 PetriNetUnfolderBase]: 289/526 cut-off events. [2024-06-27 23:57:59,162 INFO L125 PetriNetUnfolderBase]: For 22054/22054 co-relation queries the response was YES. [2024-06-27 23:57:59,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 526 events. 289/526 cut-off events. For 22054/22054 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2225 event pairs, 34 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 3658. Up to 436 conditions per place. [2024-06-27 23:57:59,165 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 111 selfloop transitions, 36 changer transitions 0/149 dead transitions. [2024-06-27 23:57:59,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 149 transitions, 1878 flow [2024-06-27 23:57:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:57:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:57:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:57:59,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-27 23:57:59,166 INFO L175 Difference]: Start difference. First operand has 163 places, 136 transitions, 1518 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:57:59,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 149 transitions, 1878 flow [2024-06-27 23:57:59,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 149 transitions, 1795 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:57:59,218 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 1549 flow [2024-06-27 23:57:59,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1549, PETRI_PLACES=165, PETRI_TRANSITIONS=137} [2024-06-27 23:57:59,218 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2024-06-27 23:57:59,219 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 1549 flow [2024-06-27 23:57:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:57:59,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:57:59,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:57:59,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:57:59,219 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 23:57:59,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:57:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2119358885, now seen corresponding path program 1 times [2024-06-27 23:57:59,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:57:59,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698039770] [2024-06-27 23:57:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:57:59,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:57:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:00,177 INFO 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 23:58:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698039770] [2024-06-27 23:58:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698039770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:00,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:00,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:00,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806933847] [2024-06-27 23:58:00,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:00,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:00,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:00,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:00,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 137 transitions, 1549 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 23:58:00,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:00,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:00,510 INFO L124 PetriNetUnfolderBase]: 295/536 cut-off events. [2024-06-27 23:58:00,510 INFO L125 PetriNetUnfolderBase]: For 22611/22611 co-relation queries the response was YES. [2024-06-27 23:58:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 536 events. 295/536 cut-off events. For 22611/22611 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2276 event pairs, 33 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3707. Up to 359 conditions per place. [2024-06-27 23:58:00,515 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 94 selfloop transitions, 56 changer transitions 0/152 dead transitions. [2024-06-27 23:58:00,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 152 transitions, 2013 flow [2024-06-27 23:58:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:58:00,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2024-06-27 23:58:00,516 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 1549 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:58:00,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 152 transitions, 2013 flow [2024-06-27 23:58:00,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1909 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:00,573 INFO L231 Difference]: Finished difference. Result has 166 places, 139 transitions, 1590 flow [2024-06-27 23:58:00,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1590, PETRI_PLACES=166, PETRI_TRANSITIONS=139} [2024-06-27 23:58:00,574 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2024-06-27 23:58:00,574 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 139 transitions, 1590 flow [2024-06-27 23:58:00,574 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 23:58:00,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:00,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:58:00,575 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 23:58:00,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2119359133, now seen corresponding path program 1 times [2024-06-27 23:58:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:00,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806600248] [2024-06-27 23:58:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:00,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:01,453 INFO 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 23:58:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806600248] [2024-06-27 23:58:01,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806600248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:01,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:01,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:58:01,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221196379] [2024-06-27 23:58:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:01,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:58:01,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:58:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:58:01,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:58:01,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 139 transitions, 1590 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 23:58:01,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:01,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:58:01,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:01,685 INFO L124 PetriNetUnfolderBase]: 317/590 cut-off events. [2024-06-27 23:58:01,685 INFO L125 PetriNetUnfolderBase]: For 32677/32677 co-relation queries the response was YES. [2024-06-27 23:58:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 590 events. 317/590 cut-off events. For 32677/32677 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2602 event pairs, 45 based on Foata normal form. 12/601 useless extension candidates. Maximal degree in co-relation 3981. Up to 359 conditions per place. [2024-06-27 23:58:01,689 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 97 selfloop transitions, 49 changer transitions 8/157 dead transitions. [2024-06-27 23:58:01,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 2092 flow [2024-06-27 23:58:01,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-27 23:58:01,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2024-06-27 23:58:01,690 INFO L175 Difference]: Start difference. First operand has 166 places, 139 transitions, 1590 flow. Second operand 8 states and 111 transitions. [2024-06-27 23:58:01,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 2092 flow [2024-06-27 23:58:01,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 157 transitions, 1963 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:01,745 INFO L231 Difference]: Finished difference. Result has 168 places, 134 transitions, 1516 flow [2024-06-27 23:58:01,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1516, PETRI_PLACES=168, PETRI_TRANSITIONS=134} [2024-06-27 23:58:01,745 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 140 predicate places. [2024-06-27 23:58:01,745 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 134 transitions, 1516 flow [2024-06-27 23:58:01,745 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 23:58:01,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:01,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:58:01,746 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 23:58:01,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2119352189, now seen corresponding path program 2 times [2024-06-27 23:58:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133074107] [2024-06-27 23:58:01,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:01,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133074107] [2024-06-27 23:58:02,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133074107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:02,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492395009] [2024-06-27 23:58:02,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:02,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:02,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:02,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 134 transitions, 1516 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 23:58:02,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:02,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:02,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:02,954 INFO L124 PetriNetUnfolderBase]: 293/550 cut-off events. [2024-06-27 23:58:02,954 INFO L125 PetriNetUnfolderBase]: For 21316/21316 co-relation queries the response was YES. [2024-06-27 23:58:02,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 550 events. 293/550 cut-off events. For 21316/21316 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2421 event pairs, 43 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3700. Up to 402 conditions per place. [2024-06-27 23:58:02,957 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 93 selfloop transitions, 46 changer transitions 2/143 dead transitions. [2024-06-27 23:58:02,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 143 transitions, 1820 flow [2024-06-27 23:58:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:02,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:58:02,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-27 23:58:02,960 INFO L175 Difference]: Start difference. First operand has 168 places, 134 transitions, 1516 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:58:02,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 143 transitions, 1820 flow [2024-06-27 23:58:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 143 transitions, 1690 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:03,019 INFO L231 Difference]: Finished difference. Result has 169 places, 132 transitions, 1466 flow [2024-06-27 23:58:03,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1466, PETRI_PLACES=169, PETRI_TRANSITIONS=132} [2024-06-27 23:58:03,019 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 141 predicate places. [2024-06-27 23:58:03,019 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 132 transitions, 1466 flow [2024-06-27 23:58:03,020 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 23:58:03,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:03,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:03,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:58:03,020 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 23:58:03,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -410184659, now seen corresponding path program 6 times [2024-06-27 23:58:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:03,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827518560] [2024-06-27 23:58:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:03,883 INFO 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 23:58:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:03,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827518560] [2024-06-27 23:58:03,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827518560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:03,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:03,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131841114] [2024-06-27 23:58:03,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:03,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:03,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 132 transitions, 1466 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 23:58:03,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:03,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:03,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:04,238 INFO L124 PetriNetUnfolderBase]: 280/523 cut-off events. [2024-06-27 23:58:04,239 INFO L125 PetriNetUnfolderBase]: For 24139/24139 co-relation queries the response was YES. [2024-06-27 23:58:04,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 523 events. 280/523 cut-off events. For 24139/24139 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2290 event pairs, 40 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 3627. Up to 448 conditions per place. [2024-06-27 23:58:04,242 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 120 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2024-06-27 23:58:04,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 145 transitions, 1822 flow [2024-06-27 23:58:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:58:04,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-27 23:58:04,244 INFO L175 Difference]: Start difference. First operand has 169 places, 132 transitions, 1466 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:58:04,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 145 transitions, 1822 flow [2024-06-27 23:58:04,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 145 transitions, 1692 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:58:04,304 INFO L231 Difference]: Finished difference. Result has 169 places, 133 transitions, 1426 flow [2024-06-27 23:58:04,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=169, PETRI_TRANSITIONS=133} [2024-06-27 23:58:04,305 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 141 predicate places. [2024-06-27 23:58:04,305 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 133 transitions, 1426 flow [2024-06-27 23:58:04,305 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 23:58:04,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:04,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:04,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:58:04,306 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 23:58:04,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash -410124209, now seen corresponding path program 7 times [2024-06-27 23:58:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614732584] [2024-06-27 23:58:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614732584] [2024-06-27 23:58:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614732584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222940138] [2024-06-27 23:58:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:05,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:05,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:05,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 133 transitions, 1426 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 23:58:05,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:05,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:05,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:05,710 INFO L124 PetriNetUnfolderBase]: 284/531 cut-off events. [2024-06-27 23:58:05,710 INFO L125 PetriNetUnfolderBase]: For 24860/24860 co-relation queries the response was YES. [2024-06-27 23:58:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 531 events. 284/531 cut-off events. For 24860/24860 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2342 event pairs, 42 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 3636. Up to 457 conditions per place. [2024-06-27 23:58:05,714 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 115 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2024-06-27 23:58:05,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 144 transitions, 1776 flow [2024-06-27 23:58:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:58:05,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-27 23:58:05,716 INFO L175 Difference]: Start difference. First operand has 169 places, 133 transitions, 1426 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:58:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 144 transitions, 1776 flow [2024-06-27 23:58:05,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 144 transitions, 1694 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:05,787 INFO L231 Difference]: Finished difference. Result has 171 places, 134 transitions, 1445 flow [2024-06-27 23:58:05,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1445, PETRI_PLACES=171, PETRI_TRANSITIONS=134} [2024-06-27 23:58:05,788 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 143 predicate places. [2024-06-27 23:58:05,788 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 134 transitions, 1445 flow [2024-06-27 23:58:05,788 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 23:58:05,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:05,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:58:05,789 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 23:58:05,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1063984529, now seen corresponding path program 8 times [2024-06-27 23:58:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:05,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999669239] [2024-06-27 23:58:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:06,807 INFO 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 23:58:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:06,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999669239] [2024-06-27 23:58:06,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999669239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:06,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:06,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734661415] [2024-06-27 23:58:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:06,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:06,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:06,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 134 transitions, 1445 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 23:58:06,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:06,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:06,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:07,131 INFO L124 PetriNetUnfolderBase]: 288/539 cut-off events. [2024-06-27 23:58:07,131 INFO L125 PetriNetUnfolderBase]: For 26108/26108 co-relation queries the response was YES. [2024-06-27 23:58:07,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 539 events. 288/539 cut-off events. For 26108/26108 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2390 event pairs, 42 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3694. Up to 458 conditions per place. [2024-06-27 23:58:07,135 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 111 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-27 23:58:07,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 144 transitions, 1793 flow [2024-06-27 23:58:07,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:58:07,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-27 23:58:07,137 INFO L175 Difference]: Start difference. First operand has 171 places, 134 transitions, 1445 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:58:07,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 144 transitions, 1793 flow [2024-06-27 23:58:07,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 144 transitions, 1704 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:07,198 INFO L231 Difference]: Finished difference. Result has 173 places, 135 transitions, 1466 flow [2024-06-27 23:58:07,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1466, PETRI_PLACES=173, PETRI_TRANSITIONS=135} [2024-06-27 23:58:07,198 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-27 23:58:07,198 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 135 transitions, 1466 flow [2024-06-27 23:58:07,198 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 23:58:07,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:07,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:07,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:58:07,199 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 23:58:07,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1867337649, now seen corresponding path program 9 times [2024-06-27 23:58:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:07,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646097622] [2024-06-27 23:58:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:08,248 INFO 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 23:58:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:08,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646097622] [2024-06-27 23:58:08,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646097622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:08,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:08,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:08,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034862196] [2024-06-27 23:58:08,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:08,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:08,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:08,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:08,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:08,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 135 transitions, 1466 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 23:58:08,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:08,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:08,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:08,527 INFO L124 PetriNetUnfolderBase]: 285/534 cut-off events. [2024-06-27 23:58:08,527 INFO L125 PetriNetUnfolderBase]: For 24191/24191 co-relation queries the response was YES. [2024-06-27 23:58:08,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 534 events. 285/534 cut-off events. For 24191/24191 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2363 event pairs, 47 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3510. Up to 414 conditions per place. [2024-06-27 23:58:08,530 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 91 selfloop transitions, 50 changer transitions 0/143 dead transitions. [2024-06-27 23:58:08,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 143 transitions, 1766 flow [2024-06-27 23:58:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:58:08,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-27 23:58:08,532 INFO L175 Difference]: Start difference. First operand has 173 places, 135 transitions, 1466 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:58:08,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 143 transitions, 1766 flow [2024-06-27 23:58:08,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 143 transitions, 1666 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:08,591 INFO L231 Difference]: Finished difference. Result has 175 places, 135 transitions, 1470 flow [2024-06-27 23:58:08,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1470, PETRI_PLACES=175, PETRI_TRANSITIONS=135} [2024-06-27 23:58:08,592 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2024-06-27 23:58:08,592 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 135 transitions, 1470 flow [2024-06-27 23:58:08,592 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 23:58:08,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:08,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:08,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:58:08,592 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 23:58:08,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -126212945, now seen corresponding path program 2 times [2024-06-27 23:58:08,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:08,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656953196] [2024-06-27 23:58:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:09,468 INFO 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 23:58:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:09,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656953196] [2024-06-27 23:58:09,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656953196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:09,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:09,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037954868] [2024-06-27 23:58:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:09,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:09,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 135 transitions, 1470 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 23:58:09,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:09,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:09,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:09,711 INFO L124 PetriNetUnfolderBase]: 293/547 cut-off events. [2024-06-27 23:58:09,711 INFO L125 PetriNetUnfolderBase]: For 24248/24248 co-relation queries the response was YES. [2024-06-27 23:58:09,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3706 conditions, 547 events. 293/547 cut-off events. For 24248/24248 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2434 event pairs, 47 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 3625. Up to 388 conditions per place. [2024-06-27 23:58:09,715 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 99 selfloop transitions, 48 changer transitions 0/149 dead transitions. [2024-06-27 23:58:09,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 149 transitions, 1952 flow [2024-06-27 23:58:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:58:09,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2024-06-27 23:58:09,732 INFO L175 Difference]: Start difference. First operand has 175 places, 135 transitions, 1470 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:58:09,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 149 transitions, 1952 flow [2024-06-27 23:58:09,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 149 transitions, 1752 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:58:09,798 INFO L231 Difference]: Finished difference. Result has 174 places, 139 transitions, 1442 flow [2024-06-27 23:58:09,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1442, PETRI_PLACES=174, PETRI_TRANSITIONS=139} [2024-06-27 23:58:09,798 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2024-06-27 23:58:09,799 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 139 transitions, 1442 flow [2024-06-27 23:58:09,799 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 23:58:09,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:09,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:09,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:58:09,804 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 23:58:09,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1867152951, now seen corresponding path program 2 times [2024-06-27 23:58:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797835298] [2024-06-27 23:58:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:10,810 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 23:58:10,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:10,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797835298] [2024-06-27 23:58:10,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797835298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:10,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539152310] [2024-06-27 23:58:10,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:10,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:10,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:10,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:10,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 139 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:10,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:10,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:10,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:11,171 INFO L124 PetriNetUnfolderBase]: 313/591 cut-off events. [2024-06-27 23:58:11,171 INFO L125 PetriNetUnfolderBase]: For 38281/38281 co-relation queries the response was YES. [2024-06-27 23:58:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 591 events. 313/591 cut-off events. For 38281/38281 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2686 event pairs, 52 based on Foata normal form. 12/599 useless extension candidates. Maximal degree in co-relation 3775. Up to 391 conditions per place. [2024-06-27 23:58:11,175 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 101 selfloop transitions, 43 changer transitions 8/154 dead transitions. [2024-06-27 23:58:11,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 154 transitions, 1854 flow [2024-06-27 23:58:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:58:11,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421455938697318 [2024-06-27 23:58:11,177 INFO L175 Difference]: Start difference. First operand has 174 places, 139 transitions, 1442 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:58:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 154 transitions, 1854 flow [2024-06-27 23:58:11,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 154 transitions, 1770 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:58:11,245 INFO L231 Difference]: Finished difference. Result has 179 places, 137 transitions, 1443 flow [2024-06-27 23:58:11,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1443, PETRI_PLACES=179, PETRI_TRANSITIONS=137} [2024-06-27 23:58:11,245 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2024-06-27 23:58:11,245 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 137 transitions, 1443 flow [2024-06-27 23:58:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:11,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:11,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:11,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:58:11,246 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 23:58:11,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:11,246 INFO L85 PathProgramCache]: Analyzing trace with hash -119956835, now seen corresponding path program 3 times [2024-06-27 23:58:11,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:11,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735420022] [2024-06-27 23:58:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:11,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:12,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735420022] [2024-06-27 23:58:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735420022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333792400] [2024-06-27 23:58:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:12,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:12,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 137 transitions, 1443 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 23:58:12,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:12,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:12,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:12,569 INFO L124 PetriNetUnfolderBase]: 295/556 cut-off events. [2024-06-27 23:58:12,569 INFO L125 PetriNetUnfolderBase]: For 25980/25980 co-relation queries the response was YES. [2024-06-27 23:58:12,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3811 conditions, 556 events. 295/556 cut-off events. For 25980/25980 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2527 event pairs, 89 based on Foata normal form. 1/556 useless extension candidates. Maximal degree in co-relation 3728. Up to 509 conditions per place. [2024-06-27 23:58:12,573 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 125 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2024-06-27 23:58:12,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 150 transitions, 1937 flow [2024-06-27 23:58:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:58:12,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-27 23:58:12,574 INFO L175 Difference]: Start difference. First operand has 179 places, 137 transitions, 1443 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:58:12,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 150 transitions, 1937 flow [2024-06-27 23:58:12,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 150 transitions, 1833 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:12,636 INFO L231 Difference]: Finished difference. Result has 181 places, 141 transitions, 1469 flow [2024-06-27 23:58:12,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1469, PETRI_PLACES=181, PETRI_TRANSITIONS=141} [2024-06-27 23:58:12,636 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 153 predicate places. [2024-06-27 23:58:12,637 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 141 transitions, 1469 flow [2024-06-27 23:58:12,637 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 23:58:12,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:12,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:12,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:58:12,637 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 23:58:12,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1630977591, now seen corresponding path program 3 times [2024-06-27 23:58:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180328060] [2024-06-27 23:58:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:13,738 INFO 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 23:58:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180328060] [2024-06-27 23:58:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180328060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:13,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:13,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:13,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973515604] [2024-06-27 23:58:13,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:13,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:13,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:13,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 141 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:13,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:13,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:13,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:14,109 INFO L124 PetriNetUnfolderBase]: 299/564 cut-off events. [2024-06-27 23:58:14,109 INFO L125 PetriNetUnfolderBase]: For 28291/28291 co-relation queries the response was YES. [2024-06-27 23:58:14,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 564 events. 299/564 cut-off events. For 28291/28291 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2573 event pairs, 91 based on Foata normal form. 2/565 useless extension candidates. Maximal degree in co-relation 3782. Up to 512 conditions per place. [2024-06-27 23:58:14,115 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 126 selfloop transitions, 24 changer transitions 0/152 dead transitions. [2024-06-27 23:58:14,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 152 transitions, 1831 flow [2024-06-27 23:58:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 23:58:14,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-27 23:58:14,117 INFO L175 Difference]: Start difference. First operand has 181 places, 141 transitions, 1469 flow. Second operand 10 states and 97 transitions. [2024-06-27 23:58:14,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 152 transitions, 1831 flow [2024-06-27 23:58:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 152 transitions, 1777 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 23:58:14,204 INFO L231 Difference]: Finished difference. Result has 187 places, 142 transitions, 1493 flow [2024-06-27 23:58:14,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1493, PETRI_PLACES=187, PETRI_TRANSITIONS=142} [2024-06-27 23:58:14,205 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 159 predicate places. [2024-06-27 23:58:14,205 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 142 transitions, 1493 flow [2024-06-27 23:58:14,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:14,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:14,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:58:14,205 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 23:58:14,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1630977839, now seen corresponding path program 4 times [2024-06-27 23:58:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487562065] [2024-06-27 23:58:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:15,215 INFO 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 23:58:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487562065] [2024-06-27 23:58:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487562065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:15,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:15,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:15,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213442330] [2024-06-27 23:58:15,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:15,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:15,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 142 transitions, 1493 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 23:58:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:15,560 INFO L124 PetriNetUnfolderBase]: 302/569 cut-off events. [2024-06-27 23:58:15,560 INFO L125 PetriNetUnfolderBase]: For 28238/28238 co-relation queries the response was YES. [2024-06-27 23:58:15,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 569 events. 302/569 cut-off events. For 28238/28238 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2613 event pairs, 91 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 3857. Up to 509 conditions per place. [2024-06-27 23:58:15,565 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 126 selfloop transitions, 29 changer transitions 0/157 dead transitions. [2024-06-27 23:58:15,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 157 transitions, 2123 flow [2024-06-27 23:58:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:58:15,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-27 23:58:15,566 INFO L175 Difference]: Start difference. First operand has 187 places, 142 transitions, 1493 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:58:15,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 157 transitions, 2123 flow [2024-06-27 23:58:15,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 157 transitions, 2055 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:15,637 INFO L231 Difference]: Finished difference. Result has 189 places, 146 transitions, 1572 flow [2024-06-27 23:58:15,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=189, PETRI_TRANSITIONS=146} [2024-06-27 23:58:15,637 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-27 23:58:15,637 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 146 transitions, 1572 flow [2024-06-27 23:58:15,637 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 23:58:15,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:15,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:15,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:58:15,638 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 23:58:15,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1630680921, now seen corresponding path program 4 times [2024-06-27 23:58:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126244424] [2024-06-27 23:58:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:16,720 INFO 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 23:58:16,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:16,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126244424] [2024-06-27 23:58:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126244424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030259572] [2024-06-27 23:58:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:16,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:16,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:16,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 146 transitions, 1572 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:16,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:16,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:16,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:17,114 INFO L124 PetriNetUnfolderBase]: 335/636 cut-off events. [2024-06-27 23:58:17,115 INFO L125 PetriNetUnfolderBase]: For 44660/44660 co-relation queries the response was YES. [2024-06-27 23:58:17,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 636 events. 335/636 cut-off events. For 44660/44660 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2943 event pairs, 102 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4762. Up to 496 conditions per place. [2024-06-27 23:58:17,119 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 135 selfloop transitions, 26 changer transitions 0/163 dead transitions. [2024-06-27 23:58:17,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 163 transitions, 2132 flow [2024-06-27 23:58:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:58:17,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-27 23:58:17,120 INFO L175 Difference]: Start difference. First operand has 189 places, 146 transitions, 1572 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:58:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 163 transitions, 2132 flow [2024-06-27 23:58:17,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 163 transitions, 2041 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:17,203 INFO L231 Difference]: Finished difference. Result has 193 places, 147 transitions, 1565 flow [2024-06-27 23:58:17,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1565, PETRI_PLACES=193, PETRI_TRANSITIONS=147} [2024-06-27 23:58:17,203 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 165 predicate places. [2024-06-27 23:58:17,204 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 147 transitions, 1565 flow [2024-06-27 23:58:17,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:17,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:17,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:58:17,204 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 23:58:17,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1860896841, now seen corresponding path program 5 times [2024-06-27 23:58:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586530490] [2024-06-27 23:58:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:18,216 INFO 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 23:58:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586530490] [2024-06-27 23:58:18,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586530490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:18,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:18,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648026280] [2024-06-27 23:58:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:18,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:18,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:18,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:18,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:18,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 147 transitions, 1565 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 23:58:18,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:18,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:18,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:18,536 INFO L124 PetriNetUnfolderBase]: 329/626 cut-off events. [2024-06-27 23:58:18,537 INFO L125 PetriNetUnfolderBase]: For 42750/42750 co-relation queries the response was YES. [2024-06-27 23:58:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 626 events. 329/626 cut-off events. For 42750/42750 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2917 event pairs, 102 based on Foata normal form. 4/629 useless extension candidates. Maximal degree in co-relation 4469. Up to 577 conditions per place. [2024-06-27 23:58:18,544 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 135 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2024-06-27 23:58:18,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 158 transitions, 1946 flow [2024-06-27 23:58:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-27 23:58:18,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-27 23:58:18,545 INFO L175 Difference]: Start difference. First operand has 193 places, 147 transitions, 1565 flow. Second operand 8 states and 83 transitions. [2024-06-27 23:58:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 158 transitions, 1946 flow [2024-06-27 23:58:18,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 158 transitions, 1877 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:18,654 INFO L231 Difference]: Finished difference. Result has 195 places, 150 transitions, 1605 flow [2024-06-27 23:58:18,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1605, PETRI_PLACES=195, PETRI_TRANSITIONS=150} [2024-06-27 23:58:18,655 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 167 predicate places. [2024-06-27 23:58:18,655 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 150 transitions, 1605 flow [2024-06-27 23:58:18,655 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 23:58:18,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:18,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:18,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:58:18,655 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 23:58:18,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1860903785, now seen corresponding path program 3 times [2024-06-27 23:58:18,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:18,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321424279] [2024-06-27 23:58:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:19,861 INFO 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 23:58:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:19,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321424279] [2024-06-27 23:58:19,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321424279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:19,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:19,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:19,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562194353] [2024-06-27 23:58:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:19,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:19,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:19,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:19,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 150 transitions, 1605 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 23:58:19,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:19,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:20,150 INFO L124 PetriNetUnfolderBase]: 335/636 cut-off events. [2024-06-27 23:58:20,150 INFO L125 PetriNetUnfolderBase]: For 41267/41267 co-relation queries the response was YES. [2024-06-27 23:58:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 636 events. 335/636 cut-off events. For 41267/41267 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2968 event pairs, 104 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4542. Up to 587 conditions per place. [2024-06-27 23:58:20,155 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 133 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2024-06-27 23:58:20,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 161 transitions, 2001 flow [2024-06-27 23:58:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:58:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:58:20,156 INFO L175 Difference]: Start difference. First operand has 195 places, 150 transitions, 1605 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:58:20,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 161 transitions, 2001 flow [2024-06-27 23:58:20,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 161 transitions, 1898 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:20,258 INFO L231 Difference]: Finished difference. Result has 198 places, 154 transitions, 1646 flow [2024-06-27 23:58:20,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1646, PETRI_PLACES=198, PETRI_TRANSITIONS=154} [2024-06-27 23:58:20,258 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 170 predicate places. [2024-06-27 23:58:20,258 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 154 transitions, 1646 flow [2024-06-27 23:58:20,259 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 23:58:20,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:20,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:58:20,259 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 23:58:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1867159895, now seen corresponding path program 4 times [2024-06-27 23:58:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:20,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382050607] [2024-06-27 23:58:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:20,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:21,169 INFO 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 23:58:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382050607] [2024-06-27 23:58:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382050607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:21,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:21,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45004967] [2024-06-27 23:58:21,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:21,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:21,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:21,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 154 transitions, 1646 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 23:58:21,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:21,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:21,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:21,422 INFO L124 PetriNetUnfolderBase]: 311/586 cut-off events. [2024-06-27 23:58:21,423 INFO L125 PetriNetUnfolderBase]: For 28824/28824 co-relation queries the response was YES. [2024-06-27 23:58:21,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 586 events. 311/586 cut-off events. For 28824/28824 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2693 event pairs, 48 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 3813. Up to 396 conditions per place. [2024-06-27 23:58:21,428 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 114 selfloop transitions, 45 changer transitions 0/161 dead transitions. [2024-06-27 23:58:21,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 161 transitions, 1980 flow [2024-06-27 23:58:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:58:21,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-06-27 23:58:21,429 INFO L175 Difference]: Start difference. First operand has 198 places, 154 transitions, 1646 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:58:21,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 161 transitions, 1980 flow [2024-06-27 23:58:21,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 161 transitions, 1880 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:21,505 INFO L231 Difference]: Finished difference. Result has 200 places, 154 transitions, 1641 flow [2024-06-27 23:58:21,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1641, PETRI_PLACES=200, PETRI_TRANSITIONS=154} [2024-06-27 23:58:21,506 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-27 23:58:21,506 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 154 transitions, 1641 flow [2024-06-27 23:58:21,506 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 23:58:21,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:21,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:21,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:58:21,507 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 23:58:21,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash 354280207, now seen corresponding path program 1 times [2024-06-27 23:58:21,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:21,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244583439] [2024-06-27 23:58:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:21,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:22,391 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 23:58:22,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244583439] [2024-06-27 23:58:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244583439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:22,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:22,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:22,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633845458] [2024-06-27 23:58:22,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:22,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:22,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 154 transitions, 1641 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 23:58:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:22,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:22,648 INFO L124 PetriNetUnfolderBase]: 319/603 cut-off events. [2024-06-27 23:58:22,648 INFO L125 PetriNetUnfolderBase]: For 28612/28612 co-relation queries the response was YES. [2024-06-27 23:58:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 603 events. 319/603 cut-off events. For 28612/28612 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2815 event pairs, 32 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 3836. Up to 466 conditions per place. [2024-06-27 23:58:22,652 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-27 23:58:22,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 171 transitions, 2036 flow [2024-06-27 23:58:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:22,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 23:58:22,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-27 23:58:22,653 INFO L175 Difference]: Start difference. First operand has 200 places, 154 transitions, 1641 flow. Second operand 8 states and 86 transitions. [2024-06-27 23:58:22,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 171 transitions, 2036 flow [2024-06-27 23:58:22,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 171 transitions, 1930 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:22,721 INFO L231 Difference]: Finished difference. Result has 201 places, 156 transitions, 1624 flow [2024-06-27 23:58:22,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1624, PETRI_PLACES=201, PETRI_TRANSITIONS=156} [2024-06-27 23:58:22,721 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 173 predicate places. [2024-06-27 23:58:22,722 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 156 transitions, 1624 flow [2024-06-27 23:58:22,722 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 23:58:22,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:22,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:22,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:58:22,722 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 23:58:22,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1731028985, now seen corresponding path program 2 times [2024-06-27 23:58:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985675273] [2024-06-27 23:58:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:23,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:23,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985675273] [2024-06-27 23:58:23,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985675273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:23,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:23,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844293401] [2024-06-27 23:58:23,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:23,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:23,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:23,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 156 transitions, 1624 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 23:58:23,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:23,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:23,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:23,845 INFO L124 PetriNetUnfolderBase]: 323/611 cut-off events. [2024-06-27 23:58:23,845 INFO L125 PetriNetUnfolderBase]: For 28385/28385 co-relation queries the response was YES. [2024-06-27 23:58:23,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 611 events. 323/611 cut-off events. For 28385/28385 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2872 event pairs, 52 based on Foata normal form. 2/612 useless extension candidates. Maximal degree in co-relation 3873. Up to 514 conditions per place. [2024-06-27 23:58:23,850 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 134 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-27 23:58:23,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 170 transitions, 2006 flow [2024-06-27 23:58:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 23:58:23,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-27 23:58:23,851 INFO L175 Difference]: Start difference. First operand has 201 places, 156 transitions, 1624 flow. Second operand 8 states and 88 transitions. [2024-06-27 23:58:23,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 170 transitions, 2006 flow [2024-06-27 23:58:23,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 170 transitions, 1948 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:58:23,932 INFO L231 Difference]: Finished difference. Result has 204 places, 157 transitions, 1654 flow [2024-06-27 23:58:23,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1654, PETRI_PLACES=204, PETRI_TRANSITIONS=157} [2024-06-27 23:58:23,932 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 176 predicate places. [2024-06-27 23:58:23,932 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 157 transitions, 1654 flow [2024-06-27 23:58:23,932 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 23:58:23,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:23,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:23,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:58:23,933 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 23:58:23,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:23,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1731486545, now seen corresponding path program 3 times [2024-06-27 23:58:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676657484] [2024-06-27 23:58:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:24,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676657484] [2024-06-27 23:58:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676657484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:24,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:24,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038516431] [2024-06-27 23:58:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:24,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:24,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:24,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 157 transitions, 1654 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 23:58:24,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:24,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:24,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:25,158 INFO L124 PetriNetUnfolderBase]: 335/635 cut-off events. [2024-06-27 23:58:25,158 INFO L125 PetriNetUnfolderBase]: For 29690/29690 co-relation queries the response was YES. [2024-06-27 23:58:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 635 events. 335/635 cut-off events. For 29690/29690 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3042 event pairs, 49 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 3979. Up to 504 conditions per place. [2024-06-27 23:58:25,164 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 140 selfloop transitions, 32 changer transitions 0/174 dead transitions. [2024-06-27 23:58:25,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 174 transitions, 2054 flow [2024-06-27 23:58:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 23:58:25,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362068965517243 [2024-06-27 23:58:25,165 INFO L175 Difference]: Start difference. First operand has 204 places, 157 transitions, 1654 flow. Second operand 8 states and 89 transitions. [2024-06-27 23:58:25,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 174 transitions, 2054 flow [2024-06-27 23:58:25,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 174 transitions, 1976 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:25,234 INFO L231 Difference]: Finished difference. Result has 207 places, 160 transitions, 1682 flow [2024-06-27 23:58:25,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1682, PETRI_PLACES=207, PETRI_TRANSITIONS=160} [2024-06-27 23:58:25,235 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 179 predicate places. [2024-06-27 23:58:25,235 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 160 transitions, 1682 flow [2024-06-27 23:58:25,235 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 23:58:25,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:25,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:58:25,236 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 23:58:25,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2090710767, now seen corresponding path program 4 times [2024-06-27 23:58:25,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:25,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525052077] [2024-06-27 23:58:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:26,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:26,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525052077] [2024-06-27 23:58:26,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525052077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:26,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:26,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83014936] [2024-06-27 23:58:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:26,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:26,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:26,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:26,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 160 transitions, 1682 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:58:26,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:26,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:26,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:26,432 INFO L124 PetriNetUnfolderBase]: 339/642 cut-off events. [2024-06-27 23:58:26,432 INFO L125 PetriNetUnfolderBase]: For 30976/30976 co-relation queries the response was YES. [2024-06-27 23:58:26,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 642 events. 339/642 cut-off events. For 30976/30976 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3064 event pairs, 42 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4058. Up to 544 conditions per place. [2024-06-27 23:58:26,436 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 137 selfloop transitions, 35 changer transitions 0/174 dead transitions. [2024-06-27 23:58:26,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 174 transitions, 2076 flow [2024-06-27 23:58:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:26,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:58:26,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-27 23:58:26,438 INFO L175 Difference]: Start difference. First operand has 207 places, 160 transitions, 1682 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:58:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 174 transitions, 2076 flow [2024-06-27 23:58:26,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 174 transitions, 1984 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:26,522 INFO L231 Difference]: Finished difference. Result has 209 places, 161 transitions, 1684 flow [2024-06-27 23:58:26,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1684, PETRI_PLACES=209, PETRI_TRANSITIONS=161} [2024-06-27 23:58:26,523 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 181 predicate places. [2024-06-27 23:58:26,523 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 161 transitions, 1684 flow [2024-06-27 23:58:26,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:58:26,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:26,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:58:26,524 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 23:58:26,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1917403185, now seen corresponding path program 5 times [2024-06-27 23:58:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743417775] [2024-06-27 23:58:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743417775] [2024-06-27 23:58:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743417775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:27,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682232924] [2024-06-27 23:58:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:27,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:27,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:27,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 161 transitions, 1684 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 23:58:27,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:27,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:27,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:27,909 INFO L124 PetriNetUnfolderBase]: 343/650 cut-off events. [2024-06-27 23:58:27,909 INFO L125 PetriNetUnfolderBase]: For 31909/31909 co-relation queries the response was YES. [2024-06-27 23:58:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 650 events. 343/650 cut-off events. For 31909/31909 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3110 event pairs, 39 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4081. Up to 518 conditions per place. [2024-06-27 23:58:27,914 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 141 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-27 23:58:27,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 176 transitions, 2086 flow [2024-06-27 23:58:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:58:27,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-27 23:58:27,915 INFO L175 Difference]: Start difference. First operand has 209 places, 161 transitions, 1684 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:58:27,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 176 transitions, 2086 flow [2024-06-27 23:58:28,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 176 transitions, 2002 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:28,004 INFO L231 Difference]: Finished difference. Result has 211 places, 162 transitions, 1694 flow [2024-06-27 23:58:28,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1694, PETRI_PLACES=211, PETRI_TRANSITIONS=162} [2024-06-27 23:58:28,005 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 183 predicate places. [2024-06-27 23:58:28,005 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 162 transitions, 1694 flow [2024-06-27 23:58:28,005 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 23:58:28,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:28,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:28,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:58:28,005 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 23:58:28,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1269898935, now seen corresponding path program 6 times [2024-06-27 23:58:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483456380] [2024-06-27 23:58:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:28,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:29,041 INFO 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 23:58:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483456380] [2024-06-27 23:58:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483456380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:29,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672698583] [2024-06-27 23:58:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:29,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:29,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:29,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 162 transitions, 1694 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 23:58:29,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:29,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:29,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:29,364 INFO L124 PetriNetUnfolderBase]: 354/671 cut-off events. [2024-06-27 23:58:29,364 INFO L125 PetriNetUnfolderBase]: For 36878/36878 co-relation queries the response was YES. [2024-06-27 23:58:29,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 671 events. 354/671 cut-off events. For 36878/36878 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3257 event pairs, 42 based on Foata normal form. 2/672 useless extension candidates. Maximal degree in co-relation 4341. Up to 487 conditions per place. [2024-06-27 23:58:29,369 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 138 selfloop transitions, 37 changer transitions 0/177 dead transitions. [2024-06-27 23:58:29,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 177 transitions, 2236 flow [2024-06-27 23:58:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:58:29,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-27 23:58:29,370 INFO L175 Difference]: Start difference. First operand has 211 places, 162 transitions, 1694 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:58:29,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 177 transitions, 2236 flow [2024-06-27 23:58:29,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 177 transitions, 2152 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:29,466 INFO L231 Difference]: Finished difference. Result has 213 places, 164 transitions, 1735 flow [2024-06-27 23:58:29,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=213, PETRI_TRANSITIONS=164} [2024-06-27 23:58:29,466 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 185 predicate places. [2024-06-27 23:58:29,466 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 164 transitions, 1735 flow [2024-06-27 23:58:29,467 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 23:58:29,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:29,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:29,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:58:29,467 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 23:58:29,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1269902655, now seen corresponding path program 7 times [2024-06-27 23:58:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959288650] [2024-06-27 23:58:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:30,484 INFO 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 23:58:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959288650] [2024-06-27 23:58:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959288650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:30,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:30,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012761202] [2024-06-27 23:58:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:30,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:30,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:30,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 164 transitions, 1735 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 23:58:30,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:30,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:30,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:30,889 INFO L124 PetriNetUnfolderBase]: 358/678 cut-off events. [2024-06-27 23:58:30,890 INFO L125 PetriNetUnfolderBase]: For 38225/38225 co-relation queries the response was YES. [2024-06-27 23:58:30,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 678 events. 358/678 cut-off events. For 38225/38225 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3300 event pairs, 44 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 4391. Up to 524 conditions per place. [2024-06-27 23:58:30,895 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 136 selfloop transitions, 38 changer transitions 0/176 dead transitions. [2024-06-27 23:58:30,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 176 transitions, 2133 flow [2024-06-27 23:58:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:58:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-27 23:58:30,896 INFO L175 Difference]: Start difference. First operand has 213 places, 164 transitions, 1735 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:58:30,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 176 transitions, 2133 flow [2024-06-27 23:58:30,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 176 transitions, 2058 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:58:30,981 INFO L231 Difference]: Finished difference. Result has 217 places, 165 transitions, 1766 flow [2024-06-27 23:58:30,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1766, PETRI_PLACES=217, PETRI_TRANSITIONS=165} [2024-06-27 23:58:30,981 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 189 predicate places. [2024-06-27 23:58:30,981 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 165 transitions, 1766 flow [2024-06-27 23:58:30,982 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 23:58:30,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:30,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:30,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:58:30,982 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 23:58:30,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1275409185, now seen corresponding path program 8 times [2024-06-27 23:58:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:30,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120201555] [2024-06-27 23:58:30,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:30,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:31,929 INFO 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 23:58:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120201555] [2024-06-27 23:58:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120201555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:31,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368602506] [2024-06-27 23:58:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:31,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:32,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:32,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 165 transitions, 1766 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:58:32,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:32,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:32,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:32,182 INFO L124 PetriNetUnfolderBase]: 355/673 cut-off events. [2024-06-27 23:58:32,182 INFO L125 PetriNetUnfolderBase]: For 35455/35455 co-relation queries the response was YES. [2024-06-27 23:58:32,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 673 events. 355/673 cut-off events. For 35455/35455 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3276 event pairs, 43 based on Foata normal form. 2/674 useless extension candidates. Maximal degree in co-relation 4258. Up to 519 conditions per place. [2024-06-27 23:58:32,187 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 128 selfloop transitions, 46 changer transitions 0/176 dead transitions. [2024-06-27 23:58:32,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 176 transitions, 2140 flow [2024-06-27 23:58:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:58:32,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-27 23:58:32,188 INFO L175 Difference]: Start difference. First operand has 217 places, 165 transitions, 1766 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:58:32,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 176 transitions, 2140 flow [2024-06-27 23:58:32,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 176 transitions, 2034 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:32,283 INFO L231 Difference]: Finished difference. Result has 218 places, 165 transitions, 1756 flow [2024-06-27 23:58:32,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1756, PETRI_PLACES=218, PETRI_TRANSITIONS=165} [2024-06-27 23:58:32,283 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 190 predicate places. [2024-06-27 23:58:32,283 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 165 transitions, 1756 flow [2024-06-27 23:58:32,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:58:32,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:32,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:32,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:58:32,284 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 23:58:32,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1275616947, now seen corresponding path program 1 times [2024-06-27 23:58:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:32,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450181385] [2024-06-27 23:58:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:32,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:33,213 INFO 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 23:58:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450181385] [2024-06-27 23:58:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450181385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:58:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739857080] [2024-06-27 23:58:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:33,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:58:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:58:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:58:33,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 23:58:33,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 165 transitions, 1756 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 23:58:33,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:33,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 23:58:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:33,479 INFO L124 PetriNetUnfolderBase]: 371/709 cut-off events. [2024-06-27 23:58:33,479 INFO L125 PetriNetUnfolderBase]: For 50535/50535 co-relation queries the response was YES. [2024-06-27 23:58:33,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4517 conditions, 709 events. 371/709 cut-off events. For 50535/50535 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3500 event pairs, 47 based on Foata normal form. 10/718 useless extension candidates. Maximal degree in co-relation 4418. Up to 510 conditions per place. [2024-06-27 23:58:33,487 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 123 selfloop transitions, 45 changer transitions 11/182 dead transitions. [2024-06-27 23:58:33,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 182 transitions, 2228 flow [2024-06-27 23:58:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:58:33,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521072796934866 [2024-06-27 23:58:33,488 INFO L175 Difference]: Start difference. First operand has 218 places, 165 transitions, 1756 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:58:33,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 182 transitions, 2228 flow [2024-06-27 23:58:33,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 182 transitions, 2128 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:33,596 INFO L231 Difference]: Finished difference. Result has 220 places, 162 transitions, 1734 flow [2024-06-27 23:58:33,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=220, PETRI_TRANSITIONS=162} [2024-06-27 23:58:33,596 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 192 predicate places. [2024-06-27 23:58:33,596 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 162 transitions, 1734 flow [2024-06-27 23:58:33,597 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 23:58:33,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:33,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:33,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:58:33,597 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 23:58:33,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1275624387, now seen corresponding path program 2 times [2024-06-27 23:58:33,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:33,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426362696] [2024-06-27 23:58:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:34,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:34,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426362696] [2024-06-27 23:58:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426362696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816062348] [2024-06-27 23:58:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:34,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:34,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 162 transitions, 1734 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 23:58:34,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:34,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:34,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:34,893 INFO L124 PetriNetUnfolderBase]: 359/689 cut-off events. [2024-06-27 23:58:34,893 INFO L125 PetriNetUnfolderBase]: For 47588/47588 co-relation queries the response was YES. [2024-06-27 23:58:34,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 689 events. 359/689 cut-off events. For 47588/47588 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3389 event pairs, 38 based on Foata normal form. 8/696 useless extension candidates. Maximal degree in co-relation 4318. Up to 500 conditions per place. [2024-06-27 23:58:34,899 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 122 selfloop transitions, 43 changer transitions 11/178 dead transitions. [2024-06-27 23:58:34,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 178 transitions, 2162 flow [2024-06-27 23:58:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:58:34,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099616858237548 [2024-06-27 23:58:34,900 INFO L175 Difference]: Start difference. First operand has 220 places, 162 transitions, 1734 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:58:34,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 178 transitions, 2162 flow [2024-06-27 23:58:34,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 178 transitions, 2050 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:34,985 INFO L231 Difference]: Finished difference. Result has 218 places, 159 transitions, 1691 flow [2024-06-27 23:58:34,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1691, PETRI_PLACES=218, PETRI_TRANSITIONS=159} [2024-06-27 23:58:34,986 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 190 predicate places. [2024-06-27 23:58:34,986 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 159 transitions, 1691 flow [2024-06-27 23:58:34,986 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 23:58:34,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:34,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:58:34,986 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 23:58:34,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 979295278, now seen corresponding path program 1 times [2024-06-27 23:58:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:34,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009229809] [2024-06-27 23:58:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:34,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:36,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:36,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009229809] [2024-06-27 23:58:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009229809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:36,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:36,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017098637] [2024-06-27 23:58:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:36,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:36,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 159 transitions, 1691 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:36,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:36,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:36,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:36,735 INFO L124 PetriNetUnfolderBase]: 338/647 cut-off events. [2024-06-27 23:58:36,736 INFO L125 PetriNetUnfolderBase]: For 32032/32032 co-relation queries the response was YES. [2024-06-27 23:58:36,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 647 events. 338/647 cut-off events. For 32032/32032 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3140 event pairs, 96 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 4001. Up to 579 conditions per place. [2024-06-27 23:58:36,742 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 133 selfloop transitions, 33 changer transitions 0/168 dead transitions. [2024-06-27 23:58:36,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 168 transitions, 2167 flow [2024-06-27 23:58:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 23:58:36,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-27 23:58:36,744 INFO L175 Difference]: Start difference. First operand has 218 places, 159 transitions, 1691 flow. Second operand 10 states and 100 transitions. [2024-06-27 23:58:36,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 168 transitions, 2167 flow [2024-06-27 23:58:36,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 168 transitions, 2041 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:36,832 INFO L231 Difference]: Finished difference. Result has 215 places, 159 transitions, 1643 flow [2024-06-27 23:58:36,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1643, PETRI_PLACES=215, PETRI_TRANSITIONS=159} [2024-06-27 23:58:36,833 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 187 predicate places. [2024-06-27 23:58:36,833 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 159 transitions, 1643 flow [2024-06-27 23:58:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:36,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:36,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:36,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:58:36,834 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 23:58:36,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 979295495, now seen corresponding path program 3 times [2024-06-27 23:58:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:36,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233549718] [2024-06-27 23:58:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:38,065 INFO 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 23:58:38,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:38,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233549718] [2024-06-27 23:58:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233549718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:38,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:38,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777540207] [2024-06-27 23:58:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:38,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:38,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:38,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 159 transitions, 1643 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:38,582 INFO L124 PetriNetUnfolderBase]: 354/683 cut-off events. [2024-06-27 23:58:38,582 INFO L125 PetriNetUnfolderBase]: For 45395/45395 co-relation queries the response was YES. [2024-06-27 23:58:38,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 683 events. 354/683 cut-off events. For 45395/45395 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3368 event pairs, 106 based on Foata normal form. 10/692 useless extension candidates. Maximal degree in co-relation 4075. Up to 582 conditions per place. [2024-06-27 23:58:38,588 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 135 selfloop transitions, 25 changer transitions 12/174 dead transitions. [2024-06-27 23:58:38,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 174 transitions, 2187 flow [2024-06-27 23:58:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 23:58:38,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-27 23:58:38,589 INFO L175 Difference]: Start difference. First operand has 215 places, 159 transitions, 1643 flow. Second operand 11 states and 110 transitions. [2024-06-27 23:58:38,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 174 transitions, 2187 flow [2024-06-27 23:58:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 174 transitions, 2123 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:38,676 INFO L231 Difference]: Finished difference. Result has 218 places, 154 transitions, 1593 flow [2024-06-27 23:58:38,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1593, PETRI_PLACES=218, PETRI_TRANSITIONS=154} [2024-06-27 23:58:38,677 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 190 predicate places. [2024-06-27 23:58:38,677 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 154 transitions, 1593 flow [2024-06-27 23:58:38,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:38,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:38,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:38,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:58:38,677 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 23:58:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1853226519, now seen corresponding path program 4 times [2024-06-27 23:58:38,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:38,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318446876] [2024-06-27 23:58:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:39,730 INFO 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 23:58:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318446876] [2024-06-27 23:58:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318446876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636745856] [2024-06-27 23:58:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:39,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:39,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:39,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 154 transitions, 1593 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 23:58:39,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:39,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:39,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:40,119 INFO L124 PetriNetUnfolderBase]: 363/702 cut-off events. [2024-06-27 23:58:40,120 INFO L125 PetriNetUnfolderBase]: For 50264/50264 co-relation queries the response was YES. [2024-06-27 23:58:40,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 702 events. 363/702 cut-off events. For 50264/50264 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3458 event pairs, 117 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4778. Up to 556 conditions per place. [2024-06-27 23:58:40,127 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 145 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2024-06-27 23:58:40,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 171 transitions, 2279 flow [2024-06-27 23:58:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:58:40,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2024-06-27 23:58:40,129 INFO L175 Difference]: Start difference. First operand has 218 places, 154 transitions, 1593 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:58:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 171 transitions, 2279 flow [2024-06-27 23:58:40,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 171 transitions, 2197 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-27 23:58:40,223 INFO L231 Difference]: Finished difference. Result has 210 places, 155 transitions, 1603 flow [2024-06-27 23:58:40,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=210, PETRI_TRANSITIONS=155} [2024-06-27 23:58:40,224 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 182 predicate places. [2024-06-27 23:58:40,224 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 155 transitions, 1603 flow [2024-06-27 23:58:40,224 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 23:58:40,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:40,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:40,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:58:40,224 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 23:58:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash 988499705, now seen corresponding path program 5 times [2024-06-27 23:58:40,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:40,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870547730] [2024-06-27 23:58:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:41,464 INFO 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 23:58:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870547730] [2024-06-27 23:58:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870547730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:41,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050457749] [2024-06-27 23:58:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:41,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:41,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 155 transitions, 1603 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 23:58:41,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:41,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:41,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:41,917 INFO L124 PetriNetUnfolderBase]: 397/776 cut-off events. [2024-06-27 23:58:41,918 INFO L125 PetriNetUnfolderBase]: For 69891/69891 co-relation queries the response was YES. [2024-06-27 23:58:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5598 conditions, 776 events. 397/776 cut-off events. For 69891/69891 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3917 event pairs, 131 based on Foata normal form. 8/783 useless extension candidates. Maximal degree in co-relation 5501. Up to 522 conditions per place. [2024-06-27 23:58:41,923 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 141 selfloop transitions, 23 changer transitions 10/176 dead transitions. [2024-06-27 23:58:41,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 176 transitions, 2311 flow [2024-06-27 23:58:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 23:58:41,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-27 23:58:41,924 INFO L175 Difference]: Start difference. First operand has 210 places, 155 transitions, 1603 flow. Second operand 11 states and 113 transitions. [2024-06-27 23:58:41,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 176 transitions, 2311 flow [2024-06-27 23:58:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 176 transitions, 2247 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:42,027 INFO L231 Difference]: Finished difference. Result has 214 places, 152 transitions, 1568 flow [2024-06-27 23:58:42,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1568, PETRI_PLACES=214, PETRI_TRANSITIONS=152} [2024-06-27 23:58:42,027 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 186 predicate places. [2024-06-27 23:58:42,028 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 152 transitions, 1568 flow [2024-06-27 23:58:42,028 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 23:58:42,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:42,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:42,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:58:42,028 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 23:58:42,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 979302935, now seen corresponding path program 6 times [2024-06-27 23:58:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:42,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097183326] [2024-06-27 23:58:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097183326] [2024-06-27 23:58:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097183326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314259988] [2024-06-27 23:58:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:43,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:43,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:43,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:43,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 152 transitions, 1568 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 23:58:43,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:43,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:43,594 INFO L124 PetriNetUnfolderBase]: 365/712 cut-off events. [2024-06-27 23:58:43,594 INFO L125 PetriNetUnfolderBase]: For 59411/59411 co-relation queries the response was YES. [2024-06-27 23:58:43,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 712 events. 365/712 cut-off events. For 59411/59411 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3545 event pairs, 112 based on Foata normal form. 8/719 useless extension candidates. Maximal degree in co-relation 4766. Up to 621 conditions per place. [2024-06-27 23:58:43,600 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 132 selfloop transitions, 21 changer transitions 12/167 dead transitions. [2024-06-27 23:58:43,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 167 transitions, 2084 flow [2024-06-27 23:58:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:58:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:58:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 23:58:43,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-27 23:58:43,601 INFO L175 Difference]: Start difference. First operand has 214 places, 152 transitions, 1568 flow. Second operand 11 states and 106 transitions. [2024-06-27 23:58:43,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 167 transitions, 2084 flow [2024-06-27 23:58:43,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 167 transitions, 2034 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:58:43,717 INFO L231 Difference]: Finished difference. Result has 211 places, 148 transitions, 1537 flow [2024-06-27 23:58:43,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1537, PETRI_PLACES=211, PETRI_TRANSITIONS=148} [2024-06-27 23:58:43,717 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 183 predicate places. [2024-06-27 23:58:43,717 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 148 transitions, 1537 flow [2024-06-27 23:58:43,717 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 23:58:43,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:43,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:43,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:58:43,718 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 23:58:43,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1853234176, now seen corresponding path program 2 times [2024-06-27 23:58:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932300113] [2024-06-27 23:58:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:44,958 INFO 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 23:58:44,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932300113] [2024-06-27 23:58:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932300113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:44,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:44,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:44,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297238050] [2024-06-27 23:58:44,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:45,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:45,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 148 transitions, 1537 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 23:58:45,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:45,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:45,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:45,313 INFO L124 PetriNetUnfolderBase]: 343/665 cut-off events. [2024-06-27 23:58:45,313 INFO L125 PetriNetUnfolderBase]: For 43042/43042 co-relation queries the response was YES. [2024-06-27 23:58:45,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 665 events. 343/665 cut-off events. For 43042/43042 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3206 event pairs, 113 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 4463. Up to 619 conditions per place. [2024-06-27 23:58:45,318 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-27 23:58:45,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 155 transitions, 1859 flow [2024-06-27 23:58:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 23:58:45,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:58:45,319 INFO L175 Difference]: Start difference. First operand has 211 places, 148 transitions, 1537 flow. Second operand 9 states and 87 transitions. [2024-06-27 23:58:45,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 155 transitions, 1859 flow [2024-06-27 23:58:45,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 155 transitions, 1797 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:58:45,407 INFO L231 Difference]: Finished difference. Result has 203 places, 148 transitions, 1525 flow [2024-06-27 23:58:45,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1525, PETRI_PLACES=203, PETRI_TRANSITIONS=148} [2024-06-27 23:58:45,408 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 175 predicate places. [2024-06-27 23:58:45,408 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 148 transitions, 1525 flow [2024-06-27 23:58:45,408 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 23:58:45,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:45,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:45,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:58:45,408 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 23:58:45,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1853233959, now seen corresponding path program 7 times [2024-06-27 23:58:45,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:45,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072274613] [2024-06-27 23:58:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:46,558 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 23:58:46,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:46,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072274613] [2024-06-27 23:58:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072274613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:46,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735894373] [2024-06-27 23:58:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:46,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:46,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:46,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:46,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 148 transitions, 1525 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:46,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:46,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:46,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:46,991 INFO L124 PetriNetUnfolderBase]: 352/688 cut-off events. [2024-06-27 23:58:46,992 INFO L125 PetriNetUnfolderBase]: For 49197/49197 co-relation queries the response was YES. [2024-06-27 23:58:46,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 688 events. 352/688 cut-off events. For 49197/49197 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3366 event pairs, 116 based on Foata normal form. 10/697 useless extension candidates. Maximal degree in co-relation 4337. Up to 600 conditions per place. [2024-06-27 23:58:46,996 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 129 selfloop transitions, 18 changer transitions 12/161 dead transitions. [2024-06-27 23:58:46,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 161 transitions, 1915 flow [2024-06-27 23:58:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:46,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-27 23:58:46,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33793103448275863 [2024-06-27 23:58:46,997 INFO L175 Difference]: Start difference. First operand has 203 places, 148 transitions, 1525 flow. Second operand 10 states and 98 transitions. [2024-06-27 23:58:46,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 161 transitions, 1915 flow [2024-06-27 23:58:47,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 161 transitions, 1869 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:47,097 INFO L231 Difference]: Finished difference. Result has 206 places, 143 transitions, 1470 flow [2024-06-27 23:58:47,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1470, PETRI_PLACES=206, PETRI_TRANSITIONS=143} [2024-06-27 23:58:47,097 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 178 predicate places. [2024-06-27 23:58:47,097 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 143 transitions, 1470 flow [2024-06-27 23:58:47,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:47,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:47,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:47,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:58:47,098 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 23:58:47,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:47,098 INFO L85 PathProgramCache]: Analyzing trace with hash 722587223, now seen corresponding path program 9 times [2024-06-27 23:58:47,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:47,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421162094] [2024-06-27 23:58:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:48,247 INFO 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 23:58:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:48,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421162094] [2024-06-27 23:58:48,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421162094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:48,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979544230] [2024-06-27 23:58:48,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:48,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:48,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:48,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:48,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:48,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 143 transitions, 1470 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 23:58:48,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:48,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:48,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:48,652 INFO L124 PetriNetUnfolderBase]: 332/648 cut-off events. [2024-06-27 23:58:48,652 INFO L125 PetriNetUnfolderBase]: For 38787/38787 co-relation queries the response was YES. [2024-06-27 23:58:48,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4273 conditions, 648 events. 332/648 cut-off events. For 38787/38787 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3125 event pairs, 112 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4179. Up to 599 conditions per place. [2024-06-27 23:58:48,659 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 130 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2024-06-27 23:58:48,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 152 transitions, 1812 flow [2024-06-27 23:58:48,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-27 23:58:48,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32950191570881227 [2024-06-27 23:58:48,661 INFO L175 Difference]: Start difference. First operand has 206 places, 143 transitions, 1470 flow. Second operand 9 states and 86 transitions. [2024-06-27 23:58:48,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 152 transitions, 1812 flow [2024-06-27 23:58:48,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 152 transitions, 1752 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:58:48,745 INFO L231 Difference]: Finished difference. Result has 199 places, 144 transitions, 1482 flow [2024-06-27 23:58:48,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=199, PETRI_TRANSITIONS=144} [2024-06-27 23:58:48,745 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 171 predicate places. [2024-06-27 23:58:48,745 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 144 transitions, 1482 flow [2024-06-27 23:58:48,746 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 23:58:48,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:48,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:48,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:58:48,746 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 23:58:48,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2047381131, now seen corresponding path program 10 times [2024-06-27 23:58:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958674913] [2024-06-27 23:58:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:49,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:49,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958674913] [2024-06-27 23:58:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958674913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983582394] [2024-06-27 23:58:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:49,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:49,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 144 transitions, 1482 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 23:58:49,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:49,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:49,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:50,179 INFO L124 PetriNetUnfolderBase]: 336/655 cut-off events. [2024-06-27 23:58:50,179 INFO L125 PetriNetUnfolderBase]: For 36416/36416 co-relation queries the response was YES. [2024-06-27 23:58:50,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 655 events. 336/655 cut-off events. For 36416/36416 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3158 event pairs, 62 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 4185. Up to 459 conditions per place. [2024-06-27 23:58:50,183 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 108 selfloop transitions, 44 changer transitions 0/154 dead transitions. [2024-06-27 23:58:50,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 154 transitions, 1832 flow [2024-06-27 23:58:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:58:50,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-27 23:58:50,184 INFO L175 Difference]: Start difference. First operand has 199 places, 144 transitions, 1482 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:58:50,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 154 transitions, 1832 flow [2024-06-27 23:58:50,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 154 transitions, 1770 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:50,278 INFO L231 Difference]: Finished difference. Result has 200 places, 145 transitions, 1540 flow [2024-06-27 23:58:50,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1540, PETRI_PLACES=200, PETRI_TRANSITIONS=145} [2024-06-27 23:58:50,279 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-27 23:58:50,279 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 145 transitions, 1540 flow [2024-06-27 23:58:50,279 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 23:58:50,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:50,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:58:50,280 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 23:58:50,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2047380976, now seen corresponding path program 3 times [2024-06-27 23:58:50,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:50,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772863781] [2024-06-27 23:58:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:51,462 INFO 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 23:58:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772863781] [2024-06-27 23:58:51,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772863781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:51,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110687715] [2024-06-27 23:58:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:51,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:51,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 145 transitions, 1540 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 23:58:51,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:51,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:51,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:51,885 INFO L124 PetriNetUnfolderBase]: 334/651 cut-off events. [2024-06-27 23:58:51,885 INFO L125 PetriNetUnfolderBase]: For 33442/33442 co-relation queries the response was YES. [2024-06-27 23:58:51,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4219 conditions, 651 events. 334/651 cut-off events. For 33442/33442 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3134 event pairs, 62 based on Foata normal form. 1/648 useless extension candidates. Maximal degree in co-relation 4128. Up to 454 conditions per place. [2024-06-27 23:58:51,890 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 107 selfloop transitions, 46 changer transitions 0/155 dead transitions. [2024-06-27 23:58:51,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 155 transitions, 1890 flow [2024-06-27 23:58:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:58:51,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-27 23:58:51,891 INFO L175 Difference]: Start difference. First operand has 200 places, 145 transitions, 1540 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:58:51,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 155 transitions, 1890 flow [2024-06-27 23:58:51,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 155 transitions, 1780 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:51,972 INFO L231 Difference]: Finished difference. Result has 201 places, 147 transitions, 1561 flow [2024-06-27 23:58:51,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1561, PETRI_PLACES=201, PETRI_TRANSITIONS=147} [2024-06-27 23:58:51,972 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 173 predicate places. [2024-06-27 23:58:51,972 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 147 transitions, 1561 flow [2024-06-27 23:58:51,972 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 23:58:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:51,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:51,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:58:51,973 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 23:58:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2052743511, now seen corresponding path program 11 times [2024-06-27 23:58:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822393335] [2024-06-27 23:58:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:52,980 INFO 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 23:58:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822393335] [2024-06-27 23:58:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822393335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:52,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:52,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319848900] [2024-06-27 23:58:52,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:52,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:52,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:53,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:53,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 147 transitions, 1561 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 23:58:53,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:53,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:53,279 INFO L124 PetriNetUnfolderBase]: 338/659 cut-off events. [2024-06-27 23:58:53,280 INFO L125 PetriNetUnfolderBase]: For 36031/36031 co-relation queries the response was YES. [2024-06-27 23:58:53,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 659 events. 338/659 cut-off events. For 36031/36031 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3189 event pairs, 62 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4207. Up to 464 conditions per place. [2024-06-27 23:58:53,284 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 110 selfloop transitions, 45 changer transitions 0/157 dead transitions. [2024-06-27 23:58:53,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 157 transitions, 1919 flow [2024-06-27 23:58:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:58:53,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-27 23:58:53,289 INFO L175 Difference]: Start difference. First operand has 201 places, 147 transitions, 1561 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:58:53,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 157 transitions, 1919 flow [2024-06-27 23:58:53,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 157 transitions, 1820 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:58:53,379 INFO L231 Difference]: Finished difference. Result has 204 places, 148 transitions, 1586 flow [2024-06-27 23:58:53,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1586, PETRI_PLACES=204, PETRI_TRANSITIONS=148} [2024-06-27 23:58:53,380 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 176 predicate places. [2024-06-27 23:58:53,380 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 148 transitions, 1586 flow [2024-06-27 23:58:53,380 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 23:58:53,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:53,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:58:53,380 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 23:58:53,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2052891381, now seen corresponding path program 12 times [2024-06-27 23:58:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266116633] [2024-06-27 23:58:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:54,751 INFO 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 23:58:54,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266116633] [2024-06-27 23:58:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266116633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:54,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791775542] [2024-06-27 23:58:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:54,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:54,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 148 transitions, 1586 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 23:58:54,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:54,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:54,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:55,229 INFO L124 PetriNetUnfolderBase]: 358/707 cut-off events. [2024-06-27 23:58:55,229 INFO L125 PetriNetUnfolderBase]: For 51235/51235 co-relation queries the response was YES. [2024-06-27 23:58:55,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 707 events. 358/707 cut-off events. For 51235/51235 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3483 event pairs, 70 based on Foata normal form. 8/711 useless extension candidates. Maximal degree in co-relation 4580. Up to 260 conditions per place. [2024-06-27 23:58:55,234 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 104 selfloop transitions, 52 changer transitions 7/165 dead transitions. [2024-06-27 23:58:55,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 165 transitions, 2196 flow [2024-06-27 23:58:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:58:55,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:58:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:58:55,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-06-27 23:58:55,235 INFO L175 Difference]: Start difference. First operand has 204 places, 148 transitions, 1586 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:58:55,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 165 transitions, 2196 flow [2024-06-27 23:58:55,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 165 transitions, 2082 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:58:55,347 INFO L231 Difference]: Finished difference. Result has 206 places, 145 transitions, 1534 flow [2024-06-27 23:58:55,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=206, PETRI_TRANSITIONS=145} [2024-06-27 23:58:55,347 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 178 predicate places. [2024-06-27 23:58:55,348 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 145 transitions, 1534 flow [2024-06-27 23:58:55,348 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 23:58:55,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:55,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:58:55,348 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 23:58:55,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2047173369, now seen corresponding path program 8 times [2024-06-27 23:58:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773196880] [2024-06-27 23:58:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:58:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773196880] [2024-06-27 23:58:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773196880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:56,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:56,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:56,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107870427] [2024-06-27 23:58:56,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:56,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:56,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:56,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:56,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 145 transitions, 1534 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:56,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:56,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:56,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:56,838 INFO L124 PetriNetUnfolderBase]: 354/702 cut-off events. [2024-06-27 23:58:56,839 INFO L125 PetriNetUnfolderBase]: For 56022/56022 co-relation queries the response was YES. [2024-06-27 23:58:56,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 702 events. 354/702 cut-off events. For 56022/56022 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3500 event pairs, 78 based on Foata normal form. 11/709 useless extension candidates. Maximal degree in co-relation 4487. Up to 510 conditions per place. [2024-06-27 23:58:56,843 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 106 selfloop transitions, 39 changer transitions 12/159 dead transitions. [2024-06-27 23:58:56,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 159 transitions, 1922 flow [2024-06-27 23:58:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:58:56,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:58:56,844 INFO L175 Difference]: Start difference. First operand has 206 places, 145 transitions, 1534 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:58:56,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 159 transitions, 1922 flow [2024-06-27 23:58:56,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 159 transitions, 1808 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:58:56,947 INFO L231 Difference]: Finished difference. Result has 207 places, 140 transitions, 1464 flow [2024-06-27 23:58:56,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1464, PETRI_PLACES=207, PETRI_TRANSITIONS=140} [2024-06-27 23:58:56,948 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 179 predicate places. [2024-06-27 23:58:56,948 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 140 transitions, 1464 flow [2024-06-27 23:58:56,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:56,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:56,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:58:56,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:58:56,948 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 23:58:56,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:56,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2047165929, now seen corresponding path program 9 times [2024-06-27 23:58:56,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:56,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965484770] [2024-06-27 23:58:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:56,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:57,913 INFO 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 23:58:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965484770] [2024-06-27 23:58:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965484770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:58:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079966128] [2024-06-27 23:58:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:58:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:58:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:58:58,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:58:58,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 140 transitions, 1464 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:58,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:58,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:58:58,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:58,260 INFO L124 PetriNetUnfolderBase]: 342/682 cut-off events. [2024-06-27 23:58:58,260 INFO L125 PetriNetUnfolderBase]: For 49798/49798 co-relation queries the response was YES. [2024-06-27 23:58:58,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4654 conditions, 682 events. 342/682 cut-off events. For 49798/49798 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3364 event pairs, 82 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4560. Up to 487 conditions per place. [2024-06-27 23:58:58,265 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 111 selfloop transitions, 41 changer transitions 0/154 dead transitions. [2024-06-27 23:58:58,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 154 transitions, 1928 flow [2024-06-27 23:58:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:58:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:58:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:58:58,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-27 23:58:58,266 INFO L175 Difference]: Start difference. First operand has 207 places, 140 transitions, 1464 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:58:58,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 154 transitions, 1928 flow [2024-06-27 23:58:58,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 154 transitions, 1806 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 23:58:58,377 INFO L231 Difference]: Finished difference. Result has 202 places, 140 transitions, 1444 flow [2024-06-27 23:58:58,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1444, PETRI_PLACES=202, PETRI_TRANSITIONS=140} [2024-06-27 23:58:58,377 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 174 predicate places. [2024-06-27 23:58:58,377 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 140 transitions, 1444 flow [2024-06-27 23:58:58,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:58:58,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:58,377 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 23:58:58,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:58:58,378 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 23:58:58,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:58,378 INFO L85 PathProgramCache]: Analyzing trace with hash 728036362, now seen corresponding path program 1 times [2024-06-27 23:58:58,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:58,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084977580] [2024-06-27 23:58:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:58,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:58:59,429 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 23:58:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:58:59,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084977580] [2024-06-27 23:58:59,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084977580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:58:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:58:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:58:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143763642] [2024-06-27 23:58:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:58:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:58:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:58:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:58:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:58:59,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:58:59,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 140 transitions, 1444 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 23:58:59,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:58:59,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:58:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:58:59,760 INFO L124 PetriNetUnfolderBase]: 350/702 cut-off events. [2024-06-27 23:58:59,760 INFO L125 PetriNetUnfolderBase]: For 49265/49265 co-relation queries the response was YES. [2024-06-27 23:58:59,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 702 events. 350/702 cut-off events. For 49265/49265 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3487 event pairs, 67 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 4416. Up to 543 conditions per place. [2024-06-27 23:58:59,766 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 118 selfloop transitions, 12 changer transitions 24/156 dead transitions. [2024-06-27 23:58:59,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 156 transitions, 1796 flow [2024-06-27 23:58:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:58:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:58:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-27 23:58:59,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-27 23:58:59,767 INFO L175 Difference]: Start difference. First operand has 202 places, 140 transitions, 1444 flow. Second operand 8 states and 85 transitions. [2024-06-27 23:58:59,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 156 transitions, 1796 flow [2024-06-27 23:58:59,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 156 transitions, 1690 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:58:59,872 INFO L231 Difference]: Finished difference. Result has 201 places, 128 transitions, 1247 flow [2024-06-27 23:58:59,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1247, PETRI_PLACES=201, PETRI_TRANSITIONS=128} [2024-06-27 23:58:59,872 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 173 predicate places. [2024-06-27 23:58:59,872 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 128 transitions, 1247 flow [2024-06-27 23:58:59,873 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 23:58:59,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:58:59,873 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 23:58:59,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:58:59,873 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 23:58:59,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:58:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1139255400, now seen corresponding path program 2 times [2024-06-27 23:58:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:58:59,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584204231] [2024-06-27 23:58:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:58:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:58:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:00,989 INFO 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 23:59:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:00,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584204231] [2024-06-27 23:59:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584204231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:00,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:00,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:59:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903288398] [2024-06-27 23:59:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:59:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:59:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:59:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:59:01,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 128 transitions, 1247 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 23:59:01,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:01,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:59:01,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:01,334 INFO L124 PetriNetUnfolderBase]: 291/587 cut-off events. [2024-06-27 23:59:01,334 INFO L125 PetriNetUnfolderBase]: For 42550/42550 co-relation queries the response was YES. [2024-06-27 23:59:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 587 events. 291/587 cut-off events. For 42550/42550 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2773 event pairs, 53 based on Foata normal form. 6/592 useless extension candidates. Maximal degree in co-relation 3578. Up to 443 conditions per place. [2024-06-27 23:59:01,338 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 97 selfloop transitions, 30 changer transitions 11/140 dead transitions. [2024-06-27 23:59:01,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 140 transitions, 1557 flow [2024-06-27 23:59:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:59:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:59:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 23:59:01,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-27 23:59:01,339 INFO L175 Difference]: Start difference. First operand has 201 places, 128 transitions, 1247 flow. Second operand 8 states and 84 transitions. [2024-06-27 23:59:01,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 140 transitions, 1557 flow [2024-06-27 23:59:01,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 140 transitions, 1483 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 23:59:01,412 INFO L231 Difference]: Finished difference. Result has 184 places, 123 transitions, 1182 flow [2024-06-27 23:59:01,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1182, PETRI_PLACES=184, PETRI_TRANSITIONS=123} [2024-06-27 23:59:01,412 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 156 predicate places. [2024-06-27 23:59:01,412 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 123 transitions, 1182 flow [2024-06-27 23:59:01,413 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 23:59:01,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:01,413 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 23:59:01,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:59:01,413 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 23:59:01,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1139370720, now seen corresponding path program 3 times [2024-06-27 23:59:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383363036] [2024-06-27 23:59:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:03,036 INFO 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 23:59:03,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:03,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383363036] [2024-06-27 23:59:03,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383363036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:03,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:03,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582087921] [2024-06-27 23:59:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:03,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:03,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:03,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:59:03,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 123 transitions, 1182 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:03,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:03,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:59:03,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:03,378 INFO L124 PetriNetUnfolderBase]: 280/570 cut-off events. [2024-06-27 23:59:03,379 INFO L125 PetriNetUnfolderBase]: For 31105/31105 co-relation queries the response was YES. [2024-06-27 23:59:03,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3405 conditions, 570 events. 280/570 cut-off events. For 31105/31105 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2688 event pairs, 60 based on Foata normal form. 6/575 useless extension candidates. Maximal degree in co-relation 3323. Up to 430 conditions per place. [2024-06-27 23:59:03,382 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 97 selfloop transitions, 17 changer transitions 23/139 dead transitions. [2024-06-27 23:59:03,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 139 transitions, 1500 flow [2024-06-27 23:59:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-27 23:59:03,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-27 23:59:03,383 INFO L175 Difference]: Start difference. First operand has 184 places, 123 transitions, 1182 flow. Second operand 10 states and 97 transitions. [2024-06-27 23:59:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 139 transitions, 1500 flow [2024-06-27 23:59:03,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 139 transitions, 1416 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:59:03,445 INFO L231 Difference]: Finished difference. Result has 182 places, 108 transitions, 1003 flow [2024-06-27 23:59:03,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1003, PETRI_PLACES=182, PETRI_TRANSITIONS=108} [2024-06-27 23:59:03,446 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 154 predicate places. [2024-06-27 23:59:03,446 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 108 transitions, 1003 flow [2024-06-27 23:59:03,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:03,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:03,446 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 23:59:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:59:03,446 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 23:59:03,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:03,446 INFO L85 PathProgramCache]: Analyzing trace with hash -704226848, now seen corresponding path program 4 times [2024-06-27 23:59:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692600046] [2024-06-27 23:59:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:04,918 INFO 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 23:59:04,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692600046] [2024-06-27 23:59:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692600046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:04,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:59:04,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984703371] [2024-06-27 23:59:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:04,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:59:04,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:04,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:59:04,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:59:05,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:05,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 108 transitions, 1003 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 23:59:05,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:05,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:05,337 INFO L124 PetriNetUnfolderBase]: 247/503 cut-off events. [2024-06-27 23:59:05,337 INFO L125 PetriNetUnfolderBase]: For 27161/27161 co-relation queries the response was YES. [2024-06-27 23:59:05,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 503 events. 247/503 cut-off events. For 27161/27161 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2273 event pairs, 56 based on Foata normal form. 6/508 useless extension candidates. Maximal degree in co-relation 2934. Up to 341 conditions per place. [2024-06-27 23:59:05,340 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 21 changer transitions 30/125 dead transitions. [2024-06-27 23:59:05,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 125 transitions, 1295 flow [2024-06-27 23:59:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:59:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:59:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:59:05,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35919540229885055 [2024-06-27 23:59:05,340 INFO L175 Difference]: Start difference. First operand has 182 places, 108 transitions, 1003 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:59:05,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 125 transitions, 1295 flow [2024-06-27 23:59:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 125 transitions, 1135 flow, removed 9 selfloop flow, removed 31 redundant places. [2024-06-27 23:59:05,391 INFO L231 Difference]: Finished difference. Result has 158 places, 86 transitions, 732 flow [2024-06-27 23:59:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=732, PETRI_PLACES=158, PETRI_TRANSITIONS=86} [2024-06-27 23:59:05,391 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 130 predicate places. [2024-06-27 23:59:05,391 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 86 transitions, 732 flow [2024-06-27 23:59:05,392 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 23:59:05,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:05,392 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 23:59:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:59:05,392 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 23:59:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -690042488, now seen corresponding path program 5 times [2024-06-27 23:59:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490979953] [2024-06-27 23:59:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:06,737 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 23:59:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490979953] [2024-06-27 23:59:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490979953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:06,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:59:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784816210] [2024-06-27 23:59:06,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:06,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:59:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:59:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:59:06,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:06,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 86 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:06,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:06,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:06,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:07,040 INFO L124 PetriNetUnfolderBase]: 189/401 cut-off events. [2024-06-27 23:59:07,040 INFO L125 PetriNetUnfolderBase]: For 18437/18437 co-relation queries the response was YES. [2024-06-27 23:59:07,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 401 events. 189/401 cut-off events. For 18437/18437 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1715 event pairs, 32 based on Foata normal form. 6/406 useless extension candidates. Maximal degree in co-relation 2148. Up to 242 conditions per place. [2024-06-27 23:59:07,043 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 51 selfloop transitions, 3 changer transitions 43/99 dead transitions. [2024-06-27 23:59:07,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 99 transitions, 962 flow [2024-06-27 23:59:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:59:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:59:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 23:59:07,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-27 23:59:07,045 INFO L175 Difference]: Start difference. First operand has 158 places, 86 transitions, 732 flow. Second operand 9 states and 95 transitions. [2024-06-27 23:59:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 99 transitions, 962 flow [2024-06-27 23:59:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 99 transitions, 898 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-27 23:59:07,076 INFO L231 Difference]: Finished difference. Result has 136 places, 55 transitions, 474 flow [2024-06-27 23:59:07,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=136, PETRI_TRANSITIONS=55} [2024-06-27 23:59:07,077 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-27 23:59:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 55 transitions, 474 flow [2024-06-27 23:59:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:07,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:07,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:59:07,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:59:07,078 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 23:59:07,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash 932039430, now seen corresponding path program 1 times [2024-06-27 23:59:07,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066481618] [2024-06-27 23:59:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:08,539 INFO 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 23:59:08,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:08,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066481618] [2024-06-27 23:59:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066481618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:08,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969983790] [2024-06-27 23:59:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:08,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:08,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:59:08,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 55 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:08,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:08,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:59:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:08,960 INFO L124 PetriNetUnfolderBase]: 153/316 cut-off events. [2024-06-27 23:59:08,960 INFO L125 PetriNetUnfolderBase]: For 16161/16161 co-relation queries the response was YES. [2024-06-27 23:59:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 316 events. 153/316 cut-off events. For 16161/16161 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1288 event pairs, 42 based on Foata normal form. 6/321 useless extension candidates. Maximal degree in co-relation 1913. Up to 124 conditions per place. [2024-06-27 23:59:08,962 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 17 changer transitions 8/69 dead transitions. [2024-06-27 23:59:08,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 69 transitions, 726 flow [2024-06-27 23:59:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 23:59:08,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2024-06-27 23:59:08,963 INFO L175 Difference]: Start difference. First operand has 136 places, 55 transitions, 474 flow. Second operand 10 states and 94 transitions. [2024-06-27 23:59:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 69 transitions, 726 flow [2024-06-27 23:59:08,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 69 transitions, 640 flow, removed 37 selfloop flow, removed 23 redundant places. [2024-06-27 23:59:08,973 INFO L231 Difference]: Finished difference. Result has 90 places, 51 transitions, 423 flow [2024-06-27 23:59:08,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=423, PETRI_PLACES=90, PETRI_TRANSITIONS=51} [2024-06-27 23:59:08,974 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-27 23:59:08,974 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 51 transitions, 423 flow [2024-06-27 23:59:08,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:08,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:08,974 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 23:59:08,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:59:08,974 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 23:59:08,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:08,975 INFO L85 PathProgramCache]: Analyzing trace with hash 925552680, now seen corresponding path program 2 times [2024-06-27 23:59:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622636298] [2024-06-27 23:59:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:10,245 INFO 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 23:59:10,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622636298] [2024-06-27 23:59:10,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622636298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:10,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:59:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262872135] [2024-06-27 23:59:10,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:10,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:59:10,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:59:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:59:10,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:59:10,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 51 transitions, 423 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 23:59:10,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:10,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:59:10,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:10,551 INFO L124 PetriNetUnfolderBase]: 114/239 cut-off events. [2024-06-27 23:59:10,551 INFO L125 PetriNetUnfolderBase]: For 3669/3669 co-relation queries the response was YES. [2024-06-27 23:59:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 239 events. 114/239 cut-off events. For 3669/3669 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 870 event pairs, 26 based on Foata normal form. 16/254 useless extension candidates. Maximal degree in co-relation 1023. Up to 124 conditions per place. [2024-06-27 23:59:10,552 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 33 selfloop transitions, 10 changer transitions 15/60 dead transitions. [2024-06-27 23:59:10,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 60 transitions, 571 flow [2024-06-27 23:59:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:59:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:59:10,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-27 23:59:10,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33189655172413796 [2024-06-27 23:59:10,553 INFO L175 Difference]: Start difference. First operand has 90 places, 51 transitions, 423 flow. Second operand 8 states and 77 transitions. [2024-06-27 23:59:10,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 60 transitions, 571 flow [2024-06-27 23:59:10,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 60 transitions, 524 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:59:10,558 INFO L231 Difference]: Finished difference. Result has 84 places, 42 transitions, 313 flow [2024-06-27 23:59:10,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=313, PETRI_PLACES=84, PETRI_TRANSITIONS=42} [2024-06-27 23:59:10,559 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-27 23:59:10,559 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 42 transitions, 313 flow [2024-06-27 23:59:10,559 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 23:59:10,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:10,559 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 23:59:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:59:10,560 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 23:59:10,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:10,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1902373722, now seen corresponding path program 6 times [2024-06-27 23:59:10,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:10,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433075424] [2024-06-27 23:59:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:10,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:11,991 INFO 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 23:59:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433075424] [2024-06-27 23:59:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433075424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:59:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212831363] [2024-06-27 23:59:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:59:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:59:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:59:12,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:59:12,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 42 transitions, 313 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 23:59:12,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:12,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:59:12,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:12,336 INFO L124 PetriNetUnfolderBase]: 81/176 cut-off events. [2024-06-27 23:59:12,336 INFO L125 PetriNetUnfolderBase]: For 1866/1866 co-relation queries the response was YES. [2024-06-27 23:59:12,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 176 events. 81/176 cut-off events. For 1866/1866 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 551 event pairs, 16 based on Foata normal form. 6/181 useless extension candidates. Maximal degree in co-relation 753. Up to 114 conditions per place. [2024-06-27 23:59:12,337 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 29 selfloop transitions, 8 changer transitions 12/51 dead transitions. [2024-06-27 23:59:12,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 51 transitions, 437 flow [2024-06-27 23:59:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:59:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:59:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-06-27 23:59:12,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2988505747126437 [2024-06-27 23:59:12,338 INFO L175 Difference]: Start difference. First operand has 84 places, 42 transitions, 313 flow. Second operand 9 states and 78 transitions. [2024-06-27 23:59:12,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 51 transitions, 437 flow [2024-06-27 23:59:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 51 transitions, 386 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 23:59:12,341 INFO L231 Difference]: Finished difference. Result has 75 places, 36 transitions, 247 flow [2024-06-27 23:59:12,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=36} [2024-06-27 23:59:12,341 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2024-06-27 23:59:12,341 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 36 transitions, 247 flow [2024-06-27 23:59:12,341 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 23:59:12,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:12,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:59:12,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:59:12,342 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 23:59:12,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 504736730, now seen corresponding path program 7 times [2024-06-27 23:59:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:12,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601332430] [2024-06-27 23:59:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:12,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:13,615 INFO 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 23:59:13,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:13,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601332430] [2024-06-27 23:59:13,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601332430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:13,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:13,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:59:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987171075] [2024-06-27 23:59:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:13,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:59:13,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:59:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:59:13,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:13,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 36 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:13,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:13,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:13,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:13,841 INFO L124 PetriNetUnfolderBase]: 71/154 cut-off events. [2024-06-27 23:59:13,841 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2024-06-27 23:59:13,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 154 events. 71/154 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 459 event pairs, 14 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 615. Up to 77 conditions per place. [2024-06-27 23:59:13,842 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 24 selfloop transitions, 10 changer transitions 10/46 dead transitions. [2024-06-27 23:59:13,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 359 flow [2024-06-27 23:59:13,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:59:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:59:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-27 23:59:13,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34099616858237547 [2024-06-27 23:59:13,843 INFO L175 Difference]: Start difference. First operand has 75 places, 36 transitions, 247 flow. Second operand 9 states and 89 transitions. [2024-06-27 23:59:13,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 359 flow [2024-06-27 23:59:13,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 46 transitions, 320 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-06-27 23:59:13,845 INFO L231 Difference]: Finished difference. Result has 66 places, 32 transitions, 208 flow [2024-06-27 23:59:13,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=66, PETRI_TRANSITIONS=32} [2024-06-27 23:59:13,845 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2024-06-27 23:59:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 32 transitions, 208 flow [2024-06-27 23:59:13,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:13,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:13,846 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 23:59:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:59:13,846 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 23:59:13,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash 784997520, now seen corresponding path program 8 times [2024-06-27 23:59:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565556625] [2024-06-27 23:59:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:15,301 INFO 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 23:59:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:15,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565556625] [2024-06-27 23:59:15,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565556625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:15,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056499972] [2024-06-27 23:59:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:15,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:15,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:15,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:15,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 32 transitions, 208 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:15,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:15,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:15,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:15,725 INFO L124 PetriNetUnfolderBase]: 66/147 cut-off events. [2024-06-27 23:59:15,725 INFO L125 PetriNetUnfolderBase]: For 1411/1411 co-relation queries the response was YES. [2024-06-27 23:59:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 147 events. 66/147 cut-off events. For 1411/1411 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 426 event pairs, 20 based on Foata normal form. 8/154 useless extension candidates. Maximal degree in co-relation 578. Up to 75 conditions per place. [2024-06-27 23:59:15,726 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 21 selfloop transitions, 8 changer transitions 16/47 dead transitions. [2024-06-27 23:59:15,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 47 transitions, 348 flow [2024-06-27 23:59:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:59:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:59:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 23:59:15,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32471264367816094 [2024-06-27 23:59:15,727 INFO L175 Difference]: Start difference. First operand has 66 places, 32 transitions, 208 flow. Second operand 12 states and 113 transitions. [2024-06-27 23:59:15,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 47 transitions, 348 flow [2024-06-27 23:59:15,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 47 transitions, 322 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:59:15,729 INFO L231 Difference]: Finished difference. Result has 66 places, 26 transitions, 165 flow [2024-06-27 23:59:15,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=66, PETRI_TRANSITIONS=26} [2024-06-27 23:59:15,729 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2024-06-27 23:59:15,729 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 26 transitions, 165 flow [2024-06-27 23:59:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:15,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:15,730 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 23:59:15,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:59:15,730 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 23:59:15,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash 682110236, now seen corresponding path program 3 times [2024-06-27 23:59:15,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:15,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075976954] [2024-06-27 23:59:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:17,227 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 23:59:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075976954] [2024-06-27 23:59:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075976954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:17,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:17,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:59:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914418437] [2024-06-27 23:59:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:17,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:59:17,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:59:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:59:17,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:17,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 26 transitions, 165 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:17,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:17,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:17,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:17,446 INFO L124 PetriNetUnfolderBase]: 51/118 cut-off events. [2024-06-27 23:59:17,447 INFO L125 PetriNetUnfolderBase]: For 903/903 co-relation queries the response was YES. [2024-06-27 23:59:17,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 118 events. 51/118 cut-off events. For 903/903 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 317 event pairs, 12 based on Foata normal form. 6/123 useless extension candidates. Maximal degree in co-relation 448. Up to 57 conditions per place. [2024-06-27 23:59:17,447 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 18 selfloop transitions, 6 changer transitions 11/37 dead transitions. [2024-06-27 23:59:17,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 37 transitions, 261 flow [2024-06-27 23:59:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 23:59:17,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2024-06-27 23:59:17,448 INFO L175 Difference]: Start difference. First operand has 66 places, 26 transitions, 165 flow. Second operand 10 states and 94 transitions. [2024-06-27 23:59:17,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 37 transitions, 261 flow [2024-06-27 23:59:17,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 37 transitions, 223 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-27 23:59:17,449 INFO L231 Difference]: Finished difference. Result has 55 places, 22 transitions, 116 flow [2024-06-27 23:59:17,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=116, PETRI_PLACES=55, PETRI_TRANSITIONS=22} [2024-06-27 23:59:17,449 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-27 23:59:17,450 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 22 transitions, 116 flow [2024-06-27 23:59:17,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:59:17,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:59:17,450 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 23:59:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:59:17,450 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 23:59:17,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:59:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash 675443996, now seen corresponding path program 4 times [2024-06-27 23:59:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:59:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935273695] [2024-06-27 23:59:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:59:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:59:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:59:18,657 INFO 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 23:59:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:59:18,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935273695] [2024-06-27 23:59:18,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935273695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:59:18,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:59:18,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:59:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694112519] [2024-06-27 23:59:18,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:59:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:59:18,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:59:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:59:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:59:18,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:59:18,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 22 transitions, 116 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 23:59:18,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:59:18,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:59:18,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:59:18,908 INFO L124 PetriNetUnfolderBase]: 22/59 cut-off events. [2024-06-27 23:59:18,908 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2024-06-27 23:59:18,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 59 events. 22/59 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 4 based on Foata normal form. 8/66 useless extension candidates. Maximal degree in co-relation 178. Up to 32 conditions per place. [2024-06-27 23:59:18,908 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-27 23:59:18,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 27 transitions, 158 flow [2024-06-27 23:59:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:59:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:59:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 86 transitions. [2024-06-27 23:59:18,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296551724137931 [2024-06-27 23:59:18,909 INFO L175 Difference]: Start difference. First operand has 55 places, 22 transitions, 116 flow. Second operand 10 states and 86 transitions. [2024-06-27 23:59:18,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 27 transitions, 158 flow [2024-06-27 23:59:18,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 126 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 23:59:18,910 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-27 23:59:18,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-27 23:59:18,910 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-06-27 23:59:18,910 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-27 23:59:18,910 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 23:59:18,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:59:18,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:59:18,921 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:59:18,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:59:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:59:18,926 INFO L445 BasicCegarLoop]: Path program histogram: [12, 9, 9, 8, 8, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:59:18,929 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:59:18,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:59:18,934 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:59:18,934 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:59:18,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:59:18 BasicIcfg [2024-06-27 23:59:18,935 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:59:18,935 INFO L158 Benchmark]: Toolchain (without parser) took 133262.44ms. Allocated memory was 174.1MB in the beginning and 836.8MB in the end (delta: 662.7MB). Free memory was 101.7MB in the beginning and 713.7MB in the end (delta: -612.0MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,936 INFO L158 Benchmark]: Witness Parser took 4.19ms. Allocated memory is still 174.1MB. Free memory was 136.0MB in the beginning and 135.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:59:18,936 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:59:18,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.58ms. Allocated memory is still 174.1MB. Free memory was 101.4MB in the beginning and 118.2MB in the end (delta: -16.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.08ms. Allocated memory is still 174.1MB. Free memory was 118.2MB in the beginning and 114.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,937 INFO L158 Benchmark]: Boogie Preprocessor took 86.02ms. Allocated memory is still 174.1MB. Free memory was 114.9MB in the beginning and 111.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,937 INFO L158 Benchmark]: RCFGBuilder took 784.23ms. Allocated memory is still 174.1MB. Free memory was 111.1MB in the beginning and 53.2MB in the end (delta: 57.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,937 INFO L158 Benchmark]: TraceAbstraction took 131636.28ms. Allocated memory was 174.1MB in the beginning and 836.8MB in the end (delta: 662.7MB). Free memory was 52.4MB in the beginning and 713.7MB in the end (delta: -661.3MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2024-06-27 23:59:18,938 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 4.19ms. Allocated memory is still 174.1MB. Free memory was 136.0MB in the beginning and 135.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.58ms. Allocated memory is still 174.1MB. Free memory was 101.4MB in the beginning and 118.2MB in the end (delta: -16.8MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.08ms. Allocated memory is still 174.1MB. Free memory was 118.2MB in the beginning and 114.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.02ms. Allocated memory is still 174.1MB. Free memory was 114.9MB in the beginning and 111.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 784.23ms. Allocated memory is still 174.1MB. Free memory was 111.1MB in the beginning and 53.2MB in the end (delta: 57.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 131636.28ms. Allocated memory was 174.1MB in the beginning and 836.8MB in the end (delta: 662.7MB). Free memory was 52.4MB in the beginning and 713.7MB in the end (delta: -661.3MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: 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, 46 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: 131.5s, OverallIterations: 96, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3884 SdHoareTripleChecker+Valid, 18.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3139 mSDsluCounter, 2084 SdHoareTripleChecker+Invalid, 16.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1622 mSDsCounter, 970 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24552 IncrementalHoareTripleChecker+Invalid, 25522 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 970 mSolverCounterUnsat, 462 mSDtfsCounter, 24552 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 818 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 807 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 23.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1766occurred in iteration=67, InterpolantAutomatonStates: 793, 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: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 94.9s InterpolantComputationTime, 1399 NumberOfCodeBlocks, 1399 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 1303 ConstructedInterpolants, 0 QuantifiedInterpolants, 61194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 96 InterpolantComputations, 96 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 23:59:18,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE