./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_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/mix012_pso.opt_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/mix012_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix012_pso.opt_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 23:19:17,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:19:17,758 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:19:17,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:19:17,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:19:17,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:19:17,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:19:17,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:19:17,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:19:17,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:19:17,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:19:17,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:19:17,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:19:17,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:19:17,801 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:19:17,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:19:17,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:19:17,801 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:19:17,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:19:17,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:19:17,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:19:17,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:19:17,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:19:17,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:19:17,803 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:19:17,803 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:19:17,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:19:17,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:19:17,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:19:17,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:19:17,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:19:17,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:19:17,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:19:17,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:19:17,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:19:17,806 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:19:17,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:19:17,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:19:17,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:19:17,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:19:18,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:19:18,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:19:18,010 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:19:18,011 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:19:18,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-27 23:19:18,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:19:18,083 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:19:18,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 23:19:19,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:19:19,242 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:19:19,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 23:19:19,252 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c9becd6/62b05b54c5a6428793cd287ad6cf8cd1/FLAGbef2f5ba1 [2024-06-27 23:19:19,262 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c9becd6/62b05b54c5a6428793cd287ad6cf8cd1 [2024-06-27 23:19:19,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:19:19,265 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:19:19,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:19:19,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:19:19,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:19:19,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:18" (1/2) ... [2024-06-27 23:19:19,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6504ecca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:18" (1/2) ... [2024-06-27 23:19:19,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fb65de6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:19:19" (2/2) ... [2024-06-27 23:19:19,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6504ecca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19, skipping insertion in model container [2024-06-27 23:19:19,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:19:19" (2/2) ... [2024-06-27 23:19:19,273 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:19:19,294 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:19:19,295 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:19:19,296 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 23:19:19,296 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:19:19,296 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-27 23:19:19,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:19:19,569 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:19:19,582 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:19:19,679 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:19:19,713 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:19:19,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19 WrapperNode [2024-06-27 23:19:19,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:19:19,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:19:19,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:19:19,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:19:19,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,775 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-27 23:19:19,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:19:19,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:19:19,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:19:19,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:19:19,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,793 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,806 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 23:19:19,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:19:19,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:19:19,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:19:19,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:19:19,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (1/1) ... [2024-06-27 23:19:19,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:19:19,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:19:19,861 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 23:19:19,881 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 23:19:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:19:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:19:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:19:19,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:19:19,894 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:19:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:19:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:19:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:19:19,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:19:19,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:19:19,900 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 23:19:20,032 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:19:20,034 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:19:20,403 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:19:20,403 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:19:20,533 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:19:20,534 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:19:20,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:19:20 BoogieIcfgContainer [2024-06-27 23:19:20,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:19:20,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:19:20,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:19:20,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:19:20,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:19:18" (1/4) ... [2024-06-27 23:19:20,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d61204a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:19:19" (2/4) ... [2024-06-27 23:19:20,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d61204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:19:19" (3/4) ... [2024-06-27 23:19:20,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d61204a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:19:20, skipping insertion in model container [2024-06-27 23:19:20,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:19:20" (4/4) ... [2024-06-27 23:19:20,545 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-27 23:19:20,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:19:20,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:19:20,559 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:19:20,595 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:19:20,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:19:20,647 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 23:19:20,648 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:19:20,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:19:20,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:19:20,652 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 23:19:20,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:19:20,670 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;@1f176b88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:19:20,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:19:20,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:19:20,673 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:19:20,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:19:20,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:20,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:19:20,675 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 23:19:20,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 353502766, now seen corresponding path program 1 times [2024-06-27 23:19:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571520426] [2024-06-27 23:19:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:21,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:21,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571520426] [2024-06-27 23:19:21,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571520426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:21,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:21,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:19:21,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951263075] [2024-06-27 23:19:21,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:21,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:19:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:19:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:19:21,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 23:19:21,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 23:19:21,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:21,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 23:19:21,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:21,922 INFO L124 PetriNetUnfolderBase]: 131/258 cut-off events. [2024-06-27 23:19:21,922 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:19:21,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 258 events. 131/258 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 960 event pairs, 75 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 503. Up to 235 conditions per place. [2024-06-27 23:19:21,927 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 23:19:21,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 111 flow [2024-06-27 23:19:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:19:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:19:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-27 23:19:21,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 23:19:21,938 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 55 transitions. [2024-06-27 23:19:21,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 111 flow [2024-06-27 23:19:21,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:21,941 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 23:19:21,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 23:19:21,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 23:19:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 23:19:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 23:19:21,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:21,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:19:21,947 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 23:19:21,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash 414392929, now seen corresponding path program 1 times [2024-06-27 23:19:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43543935] [2024-06-27 23:19:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:21,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43543935] [2024-06-27 23:19:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43543935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:22,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:19:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663171066] [2024-06-27 23:19:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:19:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:19:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:19:22,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:19:22,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 23:19:22,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:22,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:19:22,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:22,739 INFO L124 PetriNetUnfolderBase]: 150/280 cut-off events. [2024-06-27 23:19:22,740 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 23:19:22,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 280 events. 150/280 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1000 event pairs, 68 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 636. Up to 258 conditions per place. [2024-06-27 23:19:22,744 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 23:19:22,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-27 23:19:22,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:19:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:19:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-27 23:19:22,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-27 23:19:22,747 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 68 transitions. [2024-06-27 23:19:22,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-27 23:19:22,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:19:22,750 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 23:19:22,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 23:19:22,751 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 23:19:22,751 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 23:19:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 23:19:22,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:22,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:19:22,753 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 23:19:22,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:22,755 INFO L85 PathProgramCache]: Analyzing trace with hash -38720499, now seen corresponding path program 1 times [2024-06-27 23:19:22,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:22,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642901414] [2024-06-27 23:19:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:22,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:23,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:23,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642901414] [2024-06-27 23:19:23,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642901414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:19:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747384882] [2024-06-27 23:19:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:23,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:19:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:19:23,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:19:23,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:19:23,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 23:19:23,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:23,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:19:23,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:23,943 INFO L124 PetriNetUnfolderBase]: 147/275 cut-off events. [2024-06-27 23:19:23,943 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-27 23:19:23,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 275 events. 147/275 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 969 event pairs, 47 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 697. Up to 244 conditions per place. [2024-06-27 23:19:23,945 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-27 23:19:23,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 203 flow [2024-06-27 23:19:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:19:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:19:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-27 23:19:23,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-27 23:19:23,947 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 83 transitions. [2024-06-27 23:19:23,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 203 flow [2024-06-27 23:19:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:23,948 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-27 23:19:23,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-27 23:19:23,949 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-27 23:19:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-27 23:19:23,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 23:19:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:23,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:19:23,950 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 23:19:23,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash -271044448, now seen corresponding path program 1 times [2024-06-27 23:19:23,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834972894] [2024-06-27 23:19:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:25,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:25,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834972894] [2024-06-27 23:19:25,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834972894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:25,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:25,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:25,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485045635] [2024-06-27 23:19:25,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:25,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:25,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:19:25,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:25,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:25,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:19:25,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:25,588 INFO L124 PetriNetUnfolderBase]: 143/267 cut-off events. [2024-06-27 23:19:25,588 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-06-27 23:19:25,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 267 events. 143/267 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 930 event pairs, 25 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 738. Up to 218 conditions per place. [2024-06-27 23:19:25,590 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-27 23:19:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 217 flow [2024-06-27 23:19:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 23:19:25,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 23:19:25,593 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 93 transitions. [2024-06-27 23:19:25,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 217 flow [2024-06-27 23:19:25,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 202 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:19:25,594 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-27 23:19:25,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-27 23:19:25,595 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 23:19:25,595 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-27 23:19:25,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:25,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:25,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:25,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:19:25,596 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 23:19:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash -402083438, now seen corresponding path program 1 times [2024-06-27 23:19:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133925775] [2024-06-27 23:19:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133925775] [2024-06-27 23:19:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133925775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:19:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082783519] [2024-06-27 23:19:26,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:26,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:19:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:19:26,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:19:26,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:26,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:26,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:26,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:26,368 INFO L124 PetriNetUnfolderBase]: 141/264 cut-off events. [2024-06-27 23:19:26,368 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-27 23:19:26,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 264 events. 141/264 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 935 event pairs, 75 based on Foata normal form. 1/264 useless extension candidates. Maximal degree in co-relation 766. Up to 248 conditions per place. [2024-06-27 23:19:26,370 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2024-06-27 23:19:26,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 204 flow [2024-06-27 23:19:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:19:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:19:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-27 23:19:26,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-27 23:19:26,372 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 64 transitions. [2024-06-27 23:19:26,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 204 flow [2024-06-27 23:19:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 182 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:26,377 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 138 flow [2024-06-27 23:19:26,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-06-27 23:19:26,381 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-27 23:19:26,381 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 138 flow [2024-06-27 23:19:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:26,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:26,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:19:26,383 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 23:19:26,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash 420316266, now seen corresponding path program 1 times [2024-06-27 23:19:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:26,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076549640] [2024-06-27 23:19:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:27,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076549640] [2024-06-27 23:19:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076549640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340736196] [2024-06-27 23:19:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:27,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:27,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:27,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:27,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:27,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:27,815 INFO L124 PetriNetUnfolderBase]: 139/261 cut-off events. [2024-06-27 23:19:27,815 INFO L125 PetriNetUnfolderBase]: For 536/536 co-relation queries the response was YES. [2024-06-27 23:19:27,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 261 events. 139/261 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 926 event pairs, 74 based on Foata normal form. 1/261 useless extension candidates. Maximal degree in co-relation 800. Up to 242 conditions per place. [2024-06-27 23:19:27,817 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2024-06-27 23:19:27,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 228 flow [2024-06-27 23:19:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 23:19:27,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-27 23:19:27,820 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 138 flow. Second operand 7 states and 81 transitions. [2024-06-27 23:19:27,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 228 flow [2024-06-27 23:19:27,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 217 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:27,822 INFO L231 Difference]: Finished difference. Result has 45 places, 33 transitions, 164 flow [2024-06-27 23:19:27,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2024-06-27 23:19:27,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-27 23:19:27,824 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 164 flow [2024-06-27 23:19:27,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:27,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:27,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:27,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:19:27,825 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 23:19:27,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 532713677, now seen corresponding path program 1 times [2024-06-27 23:19:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:27,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551309924] [2024-06-27 23:19:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:28,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551309924] [2024-06-27 23:19:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551309924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:28,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:28,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:28,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219729325] [2024-06-27 23:19:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:28,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:28,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:28,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:28,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:28,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:28,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:28,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:28,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:28,661 INFO L124 PetriNetUnfolderBase]: 146/273 cut-off events. [2024-06-27 23:19:28,662 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-06-27 23:19:28,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 273 events. 146/273 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 974 event pairs, 64 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 899. Up to 246 conditions per place. [2024-06-27 23:19:28,663 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 12 changer transitions 0/47 dead transitions. [2024-06-27 23:19:28,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 298 flow [2024-06-27 23:19:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 23:19:28,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 23:19:28,665 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 164 flow. Second operand 7 states and 87 transitions. [2024-06-27 23:19:28,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 298 flow [2024-06-27 23:19:28,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 275 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:28,668 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 203 flow [2024-06-27 23:19:28,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-27 23:19:28,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-27 23:19:28,669 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 203 flow [2024-06-27 23:19:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:28,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:28,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:28,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:19:28,670 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 23:19:28,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -470342371, now seen corresponding path program 2 times [2024-06-27 23:19:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748600181] [2024-06-27 23:19:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:29,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:29,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748600181] [2024-06-27 23:19:29,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748600181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:29,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:29,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:29,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90549152] [2024-06-27 23:19:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:29,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:29,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:29,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:29,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:29,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:29,568 INFO L124 PetriNetUnfolderBase]: 149/278 cut-off events. [2024-06-27 23:19:29,568 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-27 23:19:29,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 278 events. 149/278 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 993 event pairs, 65 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 996. Up to 251 conditions per place. [2024-06-27 23:19:29,570 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 31 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2024-06-27 23:19:29,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 328 flow [2024-06-27 23:19:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:19:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:19:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:19:29,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 23:19:29,571 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 203 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:19:29,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 328 flow [2024-06-27 23:19:29,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 301 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:29,573 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 232 flow [2024-06-27 23:19:29,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-27 23:19:29,575 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-27 23:19:29,576 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 232 flow [2024-06-27 23:19:29,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:29,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:29,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:29,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:19:29,577 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 23:19:29,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 18907653, now seen corresponding path program 3 times [2024-06-27 23:19:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:29,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654625642] [2024-06-27 23:19:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654625642] [2024-06-27 23:19:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654625642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:19:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095057876] [2024-06-27 23:19:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:19:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:19:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:19:30,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:30,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:30,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:30,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:30,531 INFO L124 PetriNetUnfolderBase]: 147/275 cut-off events. [2024-06-27 23:19:30,532 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2024-06-27 23:19:30,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 275 events. 147/275 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 984 event pairs, 67 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 1035. Up to 239 conditions per place. [2024-06-27 23:19:30,534 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 27 selfloop transitions, 18 changer transitions 0/48 dead transitions. [2024-06-27 23:19:30,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 350 flow [2024-06-27 23:19:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-27 23:19:30,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:19:30,535 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 232 flow. Second operand 7 states and 84 transitions. [2024-06-27 23:19:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 350 flow [2024-06-27 23:19:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 328 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:19:30,539 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 271 flow [2024-06-27 23:19:30,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-27 23:19:30,540 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-27 23:19:30,540 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 271 flow [2024-06-27 23:19:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 23:19:30,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:30,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:30,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:19:30,541 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 23:19:30,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash 144903345, now seen corresponding path program 1 times [2024-06-27 23:19:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:30,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076330903] [2024-06-27 23:19:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:30,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076330903] [2024-06-27 23:19:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076330903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:31,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:31,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812307823] [2024-06-27 23:19:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:31,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:31,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 271 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 23:19:31,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:31,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:31,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:32,134 INFO L124 PetriNetUnfolderBase]: 143/269 cut-off events. [2024-06-27 23:19:32,134 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-06-27 23:19:32,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 269 events. 143/269 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 940 event pairs, 68 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1060. Up to 244 conditions per place. [2024-06-27 23:19:32,136 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 37 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2024-06-27 23:19:32,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 395 flow [2024-06-27 23:19:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 23:19:32,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 23:19:32,137 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 271 flow. Second operand 7 states and 85 transitions. [2024-06-27 23:19:32,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 395 flow [2024-06-27 23:19:32,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 357 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:32,140 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 276 flow [2024-06-27 23:19:32,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-06-27 23:19:32,141 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-27 23:19:32,141 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 276 flow [2024-06-27 23:19:32,141 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 23:19:32,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:32,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:19:32,142 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 23:19:32,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash 715240097, now seen corresponding path program 1 times [2024-06-27 23:19:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50927907] [2024-06-27 23:19:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:32,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:32,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50927907] [2024-06-27 23:19:32,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50927907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:32,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:32,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141727191] [2024-06-27 23:19:32,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:32,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:32,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:32,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:32,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 276 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 23:19:32,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:32,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:32,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:33,090 INFO L124 PetriNetUnfolderBase]: 150/283 cut-off events. [2024-06-27 23:19:33,090 INFO L125 PetriNetUnfolderBase]: For 1594/1594 co-relation queries the response was YES. [2024-06-27 23:19:33,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 283 events. 150/283 cut-off events. For 1594/1594 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1013 event pairs, 54 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 1137. Up to 240 conditions per place. [2024-06-27 23:19:33,092 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-27 23:19:33,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 456 flow [2024-06-27 23:19:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:19:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:19:33,093 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 276 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:19:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 456 flow [2024-06-27 23:19:33,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 429 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:33,096 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 330 flow [2024-06-27 23:19:33,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-06-27 23:19:33,097 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-27 23:19:33,097 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 330 flow [2024-06-27 23:19:33,097 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 23:19:33,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:33,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:33,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:19:33,098 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 23:19:33,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:33,098 INFO L85 PathProgramCache]: Analyzing trace with hash -686189547, now seen corresponding path program 2 times [2024-06-27 23:19:33,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:33,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549770079] [2024-06-27 23:19:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:33,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:33,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:33,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549770079] [2024-06-27 23:19:33,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549770079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:33,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:33,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:33,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886891749] [2024-06-27 23:19:33,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:33,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:33,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:33,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:33,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:33,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:33,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 330 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 23:19:33,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:33,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:33,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:34,235 INFO L124 PetriNetUnfolderBase]: 157/300 cut-off events. [2024-06-27 23:19:34,235 INFO L125 PetriNetUnfolderBase]: For 1949/1949 co-relation queries the response was YES. [2024-06-27 23:19:34,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 300 events. 157/300 cut-off events. For 1949/1949 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1109 event pairs, 37 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 1270. Up to 250 conditions per place. [2024-06-27 23:19:34,237 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 44 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2024-06-27 23:19:34,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 518 flow [2024-06-27 23:19:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:19:34,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:19:34,239 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 330 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:19:34,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 518 flow [2024-06-27 23:19:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 471 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:34,242 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 362 flow [2024-06-27 23:19:34,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-27 23:19:34,243 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-27 23:19:34,243 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 362 flow [2024-06-27 23:19:34,243 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 23:19:34,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:34,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:34,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:19:34,243 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 23:19:34,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:34,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1747370039, now seen corresponding path program 1 times [2024-06-27 23:19:34,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77199580] [2024-06-27 23:19:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77199580] [2024-06-27 23:19:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77199580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:35,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910068908] [2024-06-27 23:19:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:35,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:35,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:35,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:35,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:35,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:35,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:35,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:35,648 INFO L124 PetriNetUnfolderBase]: 163/311 cut-off events. [2024-06-27 23:19:35,648 INFO L125 PetriNetUnfolderBase]: For 2380/2380 co-relation queries the response was YES. [2024-06-27 23:19:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 311 events. 163/311 cut-off events. For 2380/2380 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1153 event pairs, 37 based on Foata normal form. 2/313 useless extension candidates. Maximal degree in co-relation 1352. Up to 246 conditions per place. [2024-06-27 23:19:35,650 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 40 selfloop transitions, 24 changer transitions 0/67 dead transitions. [2024-06-27 23:19:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 538 flow [2024-06-27 23:19:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:19:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:19:35,651 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 362 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:19:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 538 flow [2024-06-27 23:19:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 501 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:35,655 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 409 flow [2024-06-27 23:19:35,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-27 23:19:35,655 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-27 23:19:35,655 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 409 flow [2024-06-27 23:19:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:35,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:35,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:35,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:19:35,656 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 23:19:35,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1747370225, now seen corresponding path program 3 times [2024-06-27 23:19:35,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:35,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755110184] [2024-06-27 23:19:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:35,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755110184] [2024-06-27 23:19:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755110184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:36,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:36,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888418918] [2024-06-27 23:19:36,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:36,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:36,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 409 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 23:19:36,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:36,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:36,881 INFO L124 PetriNetUnfolderBase]: 166/316 cut-off events. [2024-06-27 23:19:36,882 INFO L125 PetriNetUnfolderBase]: For 2721/2721 co-relation queries the response was YES. [2024-06-27 23:19:36,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 316 events. 166/316 cut-off events. For 2721/2721 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 37 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1469. Up to 256 conditions per place. [2024-06-27 23:19:36,884 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 44 selfloop transitions, 22 changer transitions 0/69 dead transitions. [2024-06-27 23:19:36,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 591 flow [2024-06-27 23:19:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:19:36,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 23:19:36,885 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 409 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:19:36,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 591 flow [2024-06-27 23:19:36,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 533 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:36,889 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 428 flow [2024-06-27 23:19:36,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-27 23:19:36,889 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 23:19:36,889 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 428 flow [2024-06-27 23:19:36,889 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 23:19:36,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:36,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:19:36,890 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 23:19:36,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash 581376413, now seen corresponding path program 4 times [2024-06-27 23:19:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679485373] [2024-06-27 23:19:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679485373] [2024-06-27 23:19:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679485373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208006884] [2024-06-27 23:19:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:37,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:37,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:37,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 428 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 23:19:37,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:37,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:37,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:38,073 INFO L124 PetriNetUnfolderBase]: 169/324 cut-off events. [2024-06-27 23:19:38,073 INFO L125 PetriNetUnfolderBase]: For 3279/3279 co-relation queries the response was YES. [2024-06-27 23:19:38,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 324 events. 169/324 cut-off events. For 3279/3279 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1228 event pairs, 39 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1546. Up to 270 conditions per place. [2024-06-27 23:19:38,075 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-27 23:19:38,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 622 flow [2024-06-27 23:19:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:38,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:38,076 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 428 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:38,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 622 flow [2024-06-27 23:19:38,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 559 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:38,080 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 450 flow [2024-06-27 23:19:38,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=450, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-27 23:19:38,080 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-27 23:19:38,080 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 450 flow [2024-06-27 23:19:38,081 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 23:19:38,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:38,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:38,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:19:38,081 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 23:19:38,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash 633652329, now seen corresponding path program 2 times [2024-06-27 23:19:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:38,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556317036] [2024-06-27 23:19:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:38,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:39,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556317036] [2024-06-27 23:19:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556317036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:39,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:39,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400252413] [2024-06-27 23:19:39,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:39,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:39,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:39,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:39,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 450 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 23:19:39,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:39,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:39,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:39,342 INFO L124 PetriNetUnfolderBase]: 175/332 cut-off events. [2024-06-27 23:19:39,342 INFO L125 PetriNetUnfolderBase]: For 3725/3725 co-relation queries the response was YES. [2024-06-27 23:19:39,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 332 events. 175/332 cut-off events. For 3725/3725 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1257 event pairs, 39 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 1622. Up to 271 conditions per place. [2024-06-27 23:19:39,345 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 46 selfloop transitions, 23 changer transitions 0/72 dead transitions. [2024-06-27 23:19:39,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 638 flow [2024-06-27 23:19:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-27 23:19:39,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-27 23:19:39,346 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 450 flow. Second operand 7 states and 92 transitions. [2024-06-27 23:19:39,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 638 flow [2024-06-27 23:19:39,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 578 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:39,350 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 481 flow [2024-06-27 23:19:39,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=481, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-06-27 23:19:39,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-27 23:19:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 481 flow [2024-06-27 23:19:39,351 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 23:19:39,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:39,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:19:39,352 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 23:19:39,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1695710843, now seen corresponding path program 5 times [2024-06-27 23:19:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877503916] [2024-06-27 23:19:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:40,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:40,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877503916] [2024-06-27 23:19:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877503916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:40,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:40,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106510790] [2024-06-27 23:19:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:40,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:40,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:40,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:40,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:40,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:40,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 481 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 23:19:40,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:40,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:40,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:40,773 INFO L124 PetriNetUnfolderBase]: 178/339 cut-off events. [2024-06-27 23:19:40,773 INFO L125 PetriNetUnfolderBase]: For 4311/4311 co-relation queries the response was YES. [2024-06-27 23:19:40,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 339 events. 178/339 cut-off events. For 4311/4311 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1307 event pairs, 39 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1730. Up to 279 conditions per place. [2024-06-27 23:19:40,775 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 22 changer transitions 0/74 dead transitions. [2024-06-27 23:19:40,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 675 flow [2024-06-27 23:19:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 23:19:40,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:19:40,777 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 481 flow. Second operand 7 states and 91 transitions. [2024-06-27 23:19:40,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 675 flow [2024-06-27 23:19:40,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 608 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:40,781 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 501 flow [2024-06-27 23:19:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-06-27 23:19:40,781 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-27 23:19:40,781 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 501 flow [2024-06-27 23:19:40,782 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 23:19:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:40,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:40,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:19:40,782 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 23:19:40,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash 196791153, now seen corresponding path program 6 times [2024-06-27 23:19:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098469137] [2024-06-27 23:19:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:41,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:41,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098469137] [2024-06-27 23:19:41,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098469137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:41,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:41,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:19:41,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876873137] [2024-06-27 23:19:41,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:41,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:19:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:19:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:19:41,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:41,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 501 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 23:19:41,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:41,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:41,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:42,036 INFO L124 PetriNetUnfolderBase]: 176/336 cut-off events. [2024-06-27 23:19:42,037 INFO L125 PetriNetUnfolderBase]: For 4713/4713 co-relation queries the response was YES. [2024-06-27 23:19:42,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 336 events. 176/336 cut-off events. For 4713/4713 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1301 event pairs, 43 based on Foata normal form. 1/337 useless extension candidates. Maximal degree in co-relation 1716. Up to 255 conditions per place. [2024-06-27 23:19:42,039 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 33 changer transitions 0/75 dead transitions. [2024-06-27 23:19:42,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 697 flow [2024-06-27 23:19:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:19:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:19:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 23:19:42,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:19:42,040 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 501 flow. Second operand 7 states and 90 transitions. [2024-06-27 23:19:42,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 697 flow [2024-06-27 23:19:42,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 626 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:42,048 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 543 flow [2024-06-27 23:19:42,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-27 23:19:42,048 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-27 23:19:42,049 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 543 flow [2024-06-27 23:19:42,049 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 23:19:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:42,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:19:42,049 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 23:19:42,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1518579137, now seen corresponding path program 3 times [2024-06-27 23:19:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:42,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953942161] [2024-06-27 23:19:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:42,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:43,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953942161] [2024-06-27 23:19:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953942161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:43,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:43,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740277617] [2024-06-27 23:19:43,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:43,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:43,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:43,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:43,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:43,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:43,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:43,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:43,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:43,341 INFO L124 PetriNetUnfolderBase]: 179/341 cut-off events. [2024-06-27 23:19:43,342 INFO L125 PetriNetUnfolderBase]: For 5183/5183 co-relation queries the response was YES. [2024-06-27 23:19:43,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 341 events. 179/341 cut-off events. For 5183/5183 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1320 event pairs, 43 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1786. Up to 266 conditions per place. [2024-06-27 23:19:43,344 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 31 changer transitions 0/77 dead transitions. [2024-06-27 23:19:43,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 77 transitions, 727 flow [2024-06-27 23:19:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:19:43,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:19:43,344 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 543 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:19:43,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 77 transitions, 727 flow [2024-06-27 23:19:43,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 630 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:43,349 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 539 flow [2024-06-27 23:19:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=539, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-27 23:19:43,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-27 23:19:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 539 flow [2024-06-27 23:19:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:19:43,350 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 23:19:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1195668569, now seen corresponding path program 4 times [2024-06-27 23:19:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137670740] [2024-06-27 23:19:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137670740] [2024-06-27 23:19:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137670740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:44,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:44,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:44,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802572966] [2024-06-27 23:19:44,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:44,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:44,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:44,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:44,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 539 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:44,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:44,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:44,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:44,871 INFO L124 PetriNetUnfolderBase]: 177/340 cut-off events. [2024-06-27 23:19:44,871 INFO L125 PetriNetUnfolderBase]: For 5353/5353 co-relation queries the response was YES. [2024-06-27 23:19:44,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 340 events. 177/340 cut-off events. For 5353/5353 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1331 event pairs, 43 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1771. Up to 243 conditions per place. [2024-06-27 23:19:44,873 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 36 selfloop transitions, 40 changer transitions 0/79 dead transitions. [2024-06-27 23:19:44,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 731 flow [2024-06-27 23:19:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:19:44,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 23:19:44,874 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 539 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:19:44,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 731 flow [2024-06-27 23:19:44,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 654 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:44,879 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 577 flow [2024-06-27 23:19:44,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-27 23:19:44,880 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 23:19:44,880 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 577 flow [2024-06-27 23:19:44,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 23:19:44,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:44,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:19:44,880 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 23:19:44,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1396377284, now seen corresponding path program 1 times [2024-06-27 23:19:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539978904] [2024-06-27 23:19:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:46,058 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 23:19:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539978904] [2024-06-27 23:19:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539978904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:46,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707815186] [2024-06-27 23:19:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:46,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:19:46,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 577 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:46,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:46,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:19:46,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:46,388 INFO L124 PetriNetUnfolderBase]: 183/351 cut-off events. [2024-06-27 23:19:46,389 INFO L125 PetriNetUnfolderBase]: For 6035/6035 co-relation queries the response was YES. [2024-06-27 23:19:46,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 351 events. 183/351 cut-off events. For 6035/6035 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1377 event pairs, 35 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1880. Up to 258 conditions per place. [2024-06-27 23:19:46,391 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 49 selfloop transitions, 33 changer transitions 0/85 dead transitions. [2024-06-27 23:19:46,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 803 flow [2024-06-27 23:19:46,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:19:46,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:19:46,392 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 577 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:19:46,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 803 flow [2024-06-27 23:19:46,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 704 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:46,398 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 597 flow [2024-06-27 23:19:46,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-06-27 23:19:46,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 23:19:46,399 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 597 flow [2024-06-27 23:19:46,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:46,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:46,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:46,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:19:46,400 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 23:19:46,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:46,400 INFO L85 PathProgramCache]: Analyzing trace with hash 206686129, now seen corresponding path program 1 times [2024-06-27 23:19:46,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:46,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161053230] [2024-06-27 23:19:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161053230] [2024-06-27 23:19:48,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161053230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:48,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:48,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918925282] [2024-06-27 23:19:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:48,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:48,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:19:48,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:48,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:48,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:48,462 INFO L124 PetriNetUnfolderBase]: 191/364 cut-off events. [2024-06-27 23:19:48,462 INFO L125 PetriNetUnfolderBase]: For 6592/6592 co-relation queries the response was YES. [2024-06-27 23:19:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 364 events. 191/364 cut-off events. For 6592/6592 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1432 event pairs, 35 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 2046. Up to 283 conditions per place. [2024-06-27 23:19:48,464 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 59 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2024-06-27 23:19:48,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 915 flow [2024-06-27 23:19:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:19:48,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:19:48,465 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 597 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:19:48,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 915 flow [2024-06-27 23:19:48,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 820 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:48,472 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 639 flow [2024-06-27 23:19:48,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-27 23:19:48,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 23:19:48,473 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 639 flow [2024-06-27 23:19:48,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:19:48,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:48,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:48,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:19:48,473 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 23:19:48,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 816204409, now seen corresponding path program 2 times [2024-06-27 23:19:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895762835] [2024-06-27 23:19:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:49,807 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 23:19:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:49,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895762835] [2024-06-27 23:19:49,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895762835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:49,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:49,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485126132] [2024-06-27 23:19:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:49,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:49,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 639 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 23:19:49,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:49,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:49,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:50,123 INFO L124 PetriNetUnfolderBase]: 189/361 cut-off events. [2024-06-27 23:19:50,123 INFO L125 PetriNetUnfolderBase]: For 6888/6888 co-relation queries the response was YES. [2024-06-27 23:19:50,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2058 conditions, 361 events. 189/361 cut-off events. For 6888/6888 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1419 event pairs, 35 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 2017. Up to 292 conditions per place. [2024-06-27 23:19:50,125 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 63 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2024-06-27 23:19:50,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 843 flow [2024-06-27 23:19:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:50,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:19:50,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:19:50,128 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 639 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:19:50,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 843 flow [2024-06-27 23:19:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 756 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 23:19:50,136 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 607 flow [2024-06-27 23:19:50,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 23:19:50,136 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 23:19:50,136 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 607 flow [2024-06-27 23:19:50,137 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 23:19:50,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:50,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:19:50,137 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 23:19:50,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1027422045, now seen corresponding path program 3 times [2024-06-27 23:19:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068758595] [2024-06-27 23:19:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:51,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:51,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068758595] [2024-06-27 23:19:51,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068758595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:51,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:51,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825055593] [2024-06-27 23:19:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:51,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:51,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:51,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:51,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:51,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:51,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 607 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 23:19:51,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:51,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:51,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:52,187 INFO L124 PetriNetUnfolderBase]: 197/379 cut-off events. [2024-06-27 23:19:52,187 INFO L125 PetriNetUnfolderBase]: For 7839/7839 co-relation queries the response was YES. [2024-06-27 23:19:52,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 379 events. 197/379 cut-off events. For 7839/7839 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1538 event pairs, 37 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 2164. Up to 298 conditions per place. [2024-06-27 23:19:52,189 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2024-06-27 23:19:52,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 931 flow [2024-06-27 23:19:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:19:52,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:19:52,190 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 607 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:19:52,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 931 flow [2024-06-27 23:19:52,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 871 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:52,197 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 688 flow [2024-06-27 23:19:52,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2024-06-27 23:19:52,198 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-27 23:19:52,198 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 688 flow [2024-06-27 23:19:52,198 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 23:19:52,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:52,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:52,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:19:52,198 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 23:19:52,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1027427625, now seen corresponding path program 4 times [2024-06-27 23:19:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:52,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125496987] [2024-06-27 23:19:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:53,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125496987] [2024-06-27 23:19:53,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125496987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:53,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:53,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:53,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598461494] [2024-06-27 23:19:53,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:53,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:53,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:53,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 688 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 23:19:53,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:53,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:53,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:54,010 INFO L124 PetriNetUnfolderBase]: 195/374 cut-off events. [2024-06-27 23:19:54,010 INFO L125 PetriNetUnfolderBase]: For 8279/8279 co-relation queries the response was YES. [2024-06-27 23:19:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 374 events. 195/374 cut-off events. For 8279/8279 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1505 event pairs, 37 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 2162. Up to 305 conditions per place. [2024-06-27 23:19:54,013 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-27 23:19:54,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 886 flow [2024-06-27 23:19:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:19:54,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:19:54,014 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 688 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:19:54,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 886 flow [2024-06-27 23:19:54,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 794 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:54,022 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 649 flow [2024-06-27 23:19:54,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=649, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-27 23:19:54,022 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-27 23:19:54,022 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 649 flow [2024-06-27 23:19:54,022 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 23:19:54,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:54,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:54,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:19:54,023 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 23:19:54,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 168687996, now seen corresponding path program 2 times [2024-06-27 23:19:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:54,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542188309] [2024-06-27 23:19:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542188309] [2024-06-27 23:19:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542188309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:55,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163493973] [2024-06-27 23:19:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:55,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:55,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:19:55,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 649 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:55,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:55,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:19:55,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:55,544 INFO L124 PetriNetUnfolderBase]: 198/379 cut-off events. [2024-06-27 23:19:55,544 INFO L125 PetriNetUnfolderBase]: For 8609/8609 co-relation queries the response was YES. [2024-06-27 23:19:55,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 379 events. 198/379 cut-off events. For 8609/8609 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1531 event pairs, 41 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 2190. Up to 295 conditions per place. [2024-06-27 23:19:55,549 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 60 selfloop transitions, 30 changer transitions 0/93 dead transitions. [2024-06-27 23:19:55,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 869 flow [2024-06-27 23:19:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:19:55,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 23:19:55,550 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 649 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:19:55,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 869 flow [2024-06-27 23:19:55,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 812 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:19:55,559 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 685 flow [2024-06-27 23:19:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-06-27 23:19:55,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-27 23:19:55,560 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 685 flow [2024-06-27 23:19:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:19:55,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:55,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:19:55,561 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 23:19:55,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1805564983, now seen corresponding path program 5 times [2024-06-27 23:19:55,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:55,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801392384] [2024-06-27 23:19:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:55,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:57,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:57,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801392384] [2024-06-27 23:19:57,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801392384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:57,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:57,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:19:57,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450555403] [2024-06-27 23:19:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:57,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:19:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:19:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:19:57,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:57,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 685 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 23:19:57,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:57,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:57,484 INFO L124 PetriNetUnfolderBase]: 206/396 cut-off events. [2024-06-27 23:19:57,485 INFO L125 PetriNetUnfolderBase]: For 9933/9933 co-relation queries the response was YES. [2024-06-27 23:19:57,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 396 events. 206/396 cut-off events. For 9933/9933 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1621 event pairs, 41 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 2400. Up to 295 conditions per place. [2024-06-27 23:19:57,487 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 38 changer transitions 0/98 dead transitions. [2024-06-27 23:19:57,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 98 transitions, 1029 flow [2024-06-27 23:19:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:19:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:19:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:19:57,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:19:57,491 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 685 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:19:57,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 98 transitions, 1029 flow [2024-06-27 23:19:57,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 952 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:19:57,501 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 777 flow [2024-06-27 23:19:57,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2024-06-27 23:19:57,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-27 23:19:57,502 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 777 flow [2024-06-27 23:19:57,502 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 23:19:57,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:57,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:19:57,503 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 23:19:57,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash 176306556, now seen corresponding path program 3 times [2024-06-27 23:19:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:57,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808588152] [2024-06-27 23:19:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:58,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808588152] [2024-06-27 23:19:58,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808588152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:58,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:58,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:19:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537588756] [2024-06-27 23:19:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:19:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:19:58,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:19:58,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:19:58,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 777 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:19:58,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:58,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:19:58,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:59,230 INFO L124 PetriNetUnfolderBase]: 209/398 cut-off events. [2024-06-27 23:19:59,231 INFO L125 PetriNetUnfolderBase]: For 10805/10805 co-relation queries the response was YES. [2024-06-27 23:19:59,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 398 events. 209/398 cut-off events. For 10805/10805 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1617 event pairs, 68 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2480. Up to 355 conditions per place. [2024-06-27 23:19:59,234 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 84 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-27 23:19:59,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 1027 flow [2024-06-27 23:19:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:19:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:19:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 23:19:59,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 23:19:59,235 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 777 flow. Second operand 9 states and 101 transitions. [2024-06-27 23:19:59,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 1027 flow [2024-06-27 23:19:59,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 938 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 23:19:59,249 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 768 flow [2024-06-27 23:19:59,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=768, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-06-27 23:19:59,250 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-27 23:19:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 768 flow [2024-06-27 23:19:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:19:59,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:59,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:19:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:19:59,251 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 23:19:59,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1805559403, now seen corresponding path program 6 times [2024-06-27 23:19:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:59,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697333048] [2024-06-27 23:19:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697333048] [2024-06-27 23:20:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697333048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:00,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121285385] [2024-06-27 23:20:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:00,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:00,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:00,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:00,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 768 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 23:20:00,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:00,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:00,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:00,867 INFO L124 PetriNetUnfolderBase]: 207/396 cut-off events. [2024-06-27 23:20:00,868 INFO L125 PetriNetUnfolderBase]: For 10811/10811 co-relation queries the response was YES. [2024-06-27 23:20:00,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 396 events. 207/396 cut-off events. For 10811/10811 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1613 event pairs, 41 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 2445. Up to 304 conditions per place. [2024-06-27 23:20:00,871 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 35 changer transitions 0/101 dead transitions. [2024-06-27 23:20:00,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 980 flow [2024-06-27 23:20:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:20:00,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:20:00,872 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 768 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:20:00,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 980 flow [2024-06-27 23:20:00,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 910 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 23:20:00,885 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 773 flow [2024-06-27 23:20:00,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-27 23:20:00,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-27 23:20:00,886 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 773 flow [2024-06-27 23:20:00,887 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 23:20:00,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:00,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:20:00,887 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 23:20:00,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1588979038, now seen corresponding path program 4 times [2024-06-27 23:20:00,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848667045] [2024-06-27 23:20:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:02,196 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 23:20:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848667045] [2024-06-27 23:20:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848667045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:20:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395380872] [2024-06-27 23:20:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:20:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:20:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:20:02,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:20:02,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 773 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 23:20:02,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:02,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:20:02,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:02,386 INFO L124 PetriNetUnfolderBase]: 210/403 cut-off events. [2024-06-27 23:20:02,386 INFO L125 PetriNetUnfolderBase]: For 11531/11531 co-relation queries the response was YES. [2024-06-27 23:20:02,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 403 events. 210/403 cut-off events. For 11531/11531 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1671 event pairs, 41 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 2523. Up to 250 conditions per place. [2024-06-27 23:20:02,389 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 51 changer transitions 0/106 dead transitions. [2024-06-27 23:20:02,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 106 transitions, 1121 flow [2024-06-27 23:20:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:20:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:20:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 23:20:02,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 23:20:02,390 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 773 flow. Second operand 7 states and 108 transitions. [2024-06-27 23:20:02,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 106 transitions, 1121 flow [2024-06-27 23:20:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1046 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:02,404 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 907 flow [2024-06-27 23:20:02,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=907, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-06-27 23:20:02,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-27 23:20:02,405 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 907 flow [2024-06-27 23:20:02,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 23:20:02,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:02,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:02,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:20:02,405 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 23:20:02,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:02,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1812916633, now seen corresponding path program 7 times [2024-06-27 23:20:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:02,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929189115] [2024-06-27 23:20:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:02,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:04,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929189115] [2024-06-27 23:20:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929189115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:04,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336240827] [2024-06-27 23:20:04,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:04,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:04,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 907 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:20:04,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:04,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:04,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:04,646 INFO L124 PetriNetUnfolderBase]: 208/400 cut-off events. [2024-06-27 23:20:04,647 INFO L125 PetriNetUnfolderBase]: For 12065/12065 co-relation queries the response was YES. [2024-06-27 23:20:04,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 400 events. 208/400 cut-off events. For 12065/12065 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1650 event pairs, 41 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 2602. Up to 265 conditions per place. [2024-06-27 23:20:04,650 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 54 changer transitions 0/107 dead transitions. [2024-06-27 23:20:04,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 1179 flow [2024-06-27 23:20:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:20:04,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 23:20:04,651 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 907 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:20:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 1179 flow [2024-06-27 23:20:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 1110 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 23:20:04,666 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 1003 flow [2024-06-27 23:20:04,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1003, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-06-27 23:20:04,666 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 23:20:04,666 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 1003 flow [2024-06-27 23:20:04,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 23:20:04,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:04,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:20:04,667 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 23:20:04,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1813193680, now seen corresponding path program 1 times [2024-06-27 23:20:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955818697] [2024-06-27 23:20:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:06,429 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 23:20:06,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:06,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955818697] [2024-06-27 23:20:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955818697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647912958] [2024-06-27 23:20:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:06,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:06,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 1003 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:06,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:06,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:06,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:06,945 INFO L124 PetriNetUnfolderBase]: 205/394 cut-off events. [2024-06-27 23:20:06,945 INFO L125 PetriNetUnfolderBase]: For 12466/12466 co-relation queries the response was YES. [2024-06-27 23:20:06,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 394 events. 205/394 cut-off events. For 12466/12466 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1619 event pairs, 68 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 2620. Up to 343 conditions per place. [2024-06-27 23:20:06,948 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 91 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-06-27 23:20:06,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 109 transitions, 1235 flow [2024-06-27 23:20:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:20:06,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:20:06,950 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 1003 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:20:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 109 transitions, 1235 flow [2024-06-27 23:20:06,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 109 transitions, 1086 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:06,965 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 888 flow [2024-06-27 23:20:06,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=888, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-06-27 23:20:06,966 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 23:20:06,966 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 888 flow [2024-06-27 23:20:06,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:06,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:06,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:20:06,967 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 23:20:06,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1752771438, now seen corresponding path program 1 times [2024-06-27 23:20:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142677355] [2024-06-27 23:20:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:07,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:07,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142677355] [2024-06-27 23:20:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142677355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:07,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:07,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:07,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016655744] [2024-06-27 23:20:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:07,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:07,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 888 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 23:20:07,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:07,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:07,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:08,045 INFO L124 PetriNetUnfolderBase]: 214/416 cut-off events. [2024-06-27 23:20:08,045 INFO L125 PetriNetUnfolderBase]: For 13228/13228 co-relation queries the response was YES. [2024-06-27 23:20:08,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 416 events. 214/416 cut-off events. For 13228/13228 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1777 event pairs, 45 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 2611. Up to 335 conditions per place. [2024-06-27 23:20:08,052 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 95 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-27 23:20:08,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 118 transitions, 1186 flow [2024-06-27 23:20:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:20:08,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:20:08,054 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 888 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:20:08,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 118 transitions, 1186 flow [2024-06-27 23:20:08,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 1144 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:08,070 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 922 flow [2024-06-27 23:20:08,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-06-27 23:20:08,070 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 91 predicate places. [2024-06-27 23:20:08,070 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 922 flow [2024-06-27 23:20:08,070 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 23:20:08,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:08,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:20:08,071 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 23:20:08,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 150991520, now seen corresponding path program 2 times [2024-06-27 23:20:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479521423] [2024-06-27 23:20:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:08,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:08,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479521423] [2024-06-27 23:20:08,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479521423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:08,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:08,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:08,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779584633] [2024-06-27 23:20:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:08,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:08,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:09,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:09,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 922 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 23:20:09,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:09,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:09,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:09,332 INFO L124 PetriNetUnfolderBase]: 218/424 cut-off events. [2024-06-27 23:20:09,332 INFO L125 PetriNetUnfolderBase]: For 13687/13687 co-relation queries the response was YES. [2024-06-27 23:20:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2765 conditions, 424 events. 218/424 cut-off events. For 13687/13687 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1817 event pairs, 54 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 2706. Up to 352 conditions per place. [2024-06-27 23:20:09,335 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 93 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-27 23:20:09,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 117 transitions, 1210 flow [2024-06-27 23:20:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:09,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:20:09,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:20:09,336 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 922 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:20:09,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 117 transitions, 1210 flow [2024-06-27 23:20:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1154 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:09,353 INFO L231 Difference]: Finished difference. Result has 123 places, 103 transitions, 938 flow [2024-06-27 23:20:09,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=938, PETRI_PLACES=123, PETRI_TRANSITIONS=103} [2024-06-27 23:20:09,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-27 23:20:09,354 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 103 transitions, 938 flow [2024-06-27 23:20:09,354 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 23:20:09,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:09,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:09,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:20:09,354 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 23:20:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 615672706, now seen corresponding path program 3 times [2024-06-27 23:20:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807784667] [2024-06-27 23:20:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:09,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807784667] [2024-06-27 23:20:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807784667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:09,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:09,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:20:09,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095515293] [2024-06-27 23:20:09,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:20:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:20:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:20:10,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:20:10,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 103 transitions, 938 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 23:20:10,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:10,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:20:10,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:10,255 INFO L124 PetriNetUnfolderBase]: 207/422 cut-off events. [2024-06-27 23:20:10,255 INFO L125 PetriNetUnfolderBase]: For 14530/14533 co-relation queries the response was YES. [2024-06-27 23:20:10,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 422 events. 207/422 cut-off events. For 14530/14533 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1933 event pairs, 23 based on Foata normal form. 5/426 useless extension candidates. Maximal degree in co-relation 2585. Up to 249 conditions per place. [2024-06-27 23:20:10,258 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 69 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2024-06-27 23:20:10,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1184 flow [2024-06-27 23:20:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:20:10,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:20:10,259 INFO L175 Difference]: Start difference. First operand has 123 places, 103 transitions, 938 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:20:10,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1184 flow [2024-06-27 23:20:10,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 118 transitions, 1122 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:10,279 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 963 flow [2024-06-27 23:20:10,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=963, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2024-06-27 23:20:10,279 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-27 23:20:10,279 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 963 flow [2024-06-27 23:20:10,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 23:20:10,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:10,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:10,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:20:10,279 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 23:20:10,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1993977620, now seen corresponding path program 4 times [2024-06-27 23:20:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:10,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948684594] [2024-06-27 23:20:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948684594] [2024-06-27 23:20:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948684594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104731505] [2024-06-27 23:20:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:11,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:11,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:11,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:11,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 963 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 23:20:11,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:11,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:11,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:11,521 INFO L124 PetriNetUnfolderBase]: 236/462 cut-off events. [2024-06-27 23:20:11,521 INFO L125 PetriNetUnfolderBase]: For 15990/15990 co-relation queries the response was YES. [2024-06-27 23:20:11,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 462 events. 236/462 cut-off events. For 15990/15990 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2093 event pairs, 37 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 2914. Up to 381 conditions per place. [2024-06-27 23:20:11,524 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 100 selfloop transitions, 19 changer transitions 0/122 dead transitions. [2024-06-27 23:20:11,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 1277 flow [2024-06-27 23:20:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:20:11,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:20:11,525 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 963 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:20:11,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 1277 flow [2024-06-27 23:20:11,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 1205 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:11,546 INFO L231 Difference]: Finished difference. Result has 128 places, 107 transitions, 975 flow [2024-06-27 23:20:11,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=975, PETRI_PLACES=128, PETRI_TRANSITIONS=107} [2024-06-27 23:20:11,547 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-27 23:20:11,547 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 107 transitions, 975 flow [2024-06-27 23:20:11,547 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 23:20:11,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:11,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:11,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:20:11,547 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 23:20:11,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -471939720, now seen corresponding path program 5 times [2024-06-27 23:20:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400391616] [2024-06-27 23:20:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400391616] [2024-06-27 23:20:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400391616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:12,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:12,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358194119] [2024-06-27 23:20:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:12,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:12,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:12,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:12,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:12,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:12,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 107 transitions, 975 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 23:20:12,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:12,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:12,906 INFO L124 PetriNetUnfolderBase]: 240/470 cut-off events. [2024-06-27 23:20:12,906 INFO L125 PetriNetUnfolderBase]: For 15262/15262 co-relation queries the response was YES. [2024-06-27 23:20:12,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 470 events. 240/470 cut-off events. For 15262/15262 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2146 event pairs, 39 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2901. Up to 398 conditions per place. [2024-06-27 23:20:12,910 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 98 selfloop transitions, 20 changer transitions 0/121 dead transitions. [2024-06-27 23:20:12,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 121 transitions, 1271 flow [2024-06-27 23:20:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:20:12,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:20:12,913 INFO L175 Difference]: Start difference. First operand has 128 places, 107 transitions, 975 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:20:12,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 121 transitions, 1271 flow [2024-06-27 23:20:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1215 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:12,934 INFO L231 Difference]: Finished difference. Result has 131 places, 108 transitions, 991 flow [2024-06-27 23:20:12,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=991, PETRI_PLACES=131, PETRI_TRANSITIONS=108} [2024-06-27 23:20:12,935 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-06-27 23:20:12,935 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 108 transitions, 991 flow [2024-06-27 23:20:12,935 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 23:20:12,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:12,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:12,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:20:12,936 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 23:20:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2112125750, now seen corresponding path program 6 times [2024-06-27 23:20:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456394030] [2024-06-27 23:20:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456394030] [2024-06-27 23:20:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456394030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704291878] [2024-06-27 23:20:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:14,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:14,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:14,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 108 transitions, 991 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 23:20:14,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:14,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:14,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:14,395 INFO L124 PetriNetUnfolderBase]: 244/477 cut-off events. [2024-06-27 23:20:14,395 INFO L125 PetriNetUnfolderBase]: For 16214/16214 co-relation queries the response was YES. [2024-06-27 23:20:14,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 477 events. 244/477 cut-off events. For 16214/16214 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2199 event pairs, 41 based on Foata normal form. 2/479 useless extension candidates. Maximal degree in co-relation 2961. Up to 397 conditions per place. [2024-06-27 23:20:14,398 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 94 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2024-06-27 23:20:14,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 121 transitions, 1285 flow [2024-06-27 23:20:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:20:14,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-06-27 23:20:14,404 INFO L175 Difference]: Start difference. First operand has 131 places, 108 transitions, 991 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:20:14,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 121 transitions, 1285 flow [2024-06-27 23:20:14,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 121 transitions, 1223 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:14,424 INFO L231 Difference]: Finished difference. Result has 132 places, 109 transitions, 1011 flow [2024-06-27 23:20:14,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1011, PETRI_PLACES=132, PETRI_TRANSITIONS=109} [2024-06-27 23:20:14,424 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 23:20:14,424 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 109 transitions, 1011 flow [2024-06-27 23:20:14,424 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 23:20:14,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:14,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:14,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:20:14,425 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 23:20:14,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 109636624, now seen corresponding path program 1 times [2024-06-27 23:20:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005551478] [2024-06-27 23:20:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005551478] [2024-06-27 23:20:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005551478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:16,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:16,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697952497] [2024-06-27 23:20:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:16,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:16,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 109 transitions, 1011 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:16,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:16,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:16,643 INFO L124 PetriNetUnfolderBase]: 257/500 cut-off events. [2024-06-27 23:20:16,643 INFO L125 PetriNetUnfolderBase]: For 18022/18022 co-relation queries the response was YES. [2024-06-27 23:20:16,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 500 events. 257/500 cut-off events. For 18022/18022 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2330 event pairs, 41 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 3220. Up to 364 conditions per place. [2024-06-27 23:20:16,647 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 77 selfloop transitions, 46 changer transitions 0/126 dead transitions. [2024-06-27 23:20:16,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 126 transitions, 1477 flow [2024-06-27 23:20:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 23:20:16,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:20:16,648 INFO L175 Difference]: Start difference. First operand has 132 places, 109 transitions, 1011 flow. Second operand 8 states and 112 transitions. [2024-06-27 23:20:16,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 126 transitions, 1477 flow [2024-06-27 23:20:16,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 126 transitions, 1405 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:16,673 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 1179 flow [2024-06-27 23:20:16,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1179, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2024-06-27 23:20:16,673 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-27 23:20:16,673 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 1179 flow [2024-06-27 23:20:16,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:16,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:16,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:16,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:20:16,674 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 23:20:16,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:16,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1605913342, now seen corresponding path program 2 times [2024-06-27 23:20:16,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:16,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521324174] [2024-06-27 23:20:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:18,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521324174] [2024-06-27 23:20:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521324174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:18,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:18,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727361411] [2024-06-27 23:20:18,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:18,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:18,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:18,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:18,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 1179 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:18,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:18,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:18,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:18,743 INFO L124 PetriNetUnfolderBase]: 258/502 cut-off events. [2024-06-27 23:20:18,743 INFO L125 PetriNetUnfolderBase]: For 18881/18881 co-relation queries the response was YES. [2024-06-27 23:20:18,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3338 conditions, 502 events. 258/502 cut-off events. For 18881/18881 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2318 event pairs, 41 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 3274. Up to 403 conditions per place. [2024-06-27 23:20:18,746 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 89 selfloop transitions, 35 changer transitions 0/127 dead transitions. [2024-06-27 23:20:18,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 127 transitions, 1489 flow [2024-06-27 23:20:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:20:18,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:20:18,749 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 1179 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:20:18,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 127 transitions, 1489 flow [2024-06-27 23:20:18,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 127 transitions, 1388 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:18,780 INFO L231 Difference]: Finished difference. Result has 140 places, 117 transitions, 1197 flow [2024-06-27 23:20:18,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=140, PETRI_TRANSITIONS=117} [2024-06-27 23:20:18,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-27 23:20:18,780 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 117 transitions, 1197 flow [2024-06-27 23:20:18,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:18,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:18,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:18,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:20:18,781 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 23:20:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2112303690, now seen corresponding path program 3 times [2024-06-27 23:20:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:18,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620622901] [2024-06-27 23:20:18,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:20,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:20,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620622901] [2024-06-27 23:20:20,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620622901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:20,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479375208] [2024-06-27 23:20:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:20,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:20,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:21,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:21,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 117 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:21,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:21,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:21,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:21,588 INFO L124 PetriNetUnfolderBase]: 271/528 cut-off events. [2024-06-27 23:20:21,588 INFO L125 PetriNetUnfolderBase]: For 20666/20666 co-relation queries the response was YES. [2024-06-27 23:20:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 528 events. 271/528 cut-off events. For 20666/20666 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2496 event pairs, 38 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 3573. Up to 369 conditions per place. [2024-06-27 23:20:21,591 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 50 changer transitions 0/134 dead transitions. [2024-06-27 23:20:21,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 134 transitions, 1749 flow [2024-06-27 23:20:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:20:21,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 23:20:21,593 INFO L175 Difference]: Start difference. First operand has 140 places, 117 transitions, 1197 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:20:21,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 134 transitions, 1749 flow [2024-06-27 23:20:21,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1614 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:21,623 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1307 flow [2024-06-27 23:20:21,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-06-27 23:20:21,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-06-27 23:20:21,623 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1307 flow [2024-06-27 23:20:21,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:21,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:21,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:20:21,624 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 23:20:21,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash -467286372, now seen corresponding path program 1 times [2024-06-27 23:20:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:21,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093999956] [2024-06-27 23:20:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:23,807 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 23:20:23,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:23,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093999956] [2024-06-27 23:20:23,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093999956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745127692] [2024-06-27 23:20:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:23,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:23,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:23,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1307 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:23,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:23,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:24,194 INFO L124 PetriNetUnfolderBase]: 272/529 cut-off events. [2024-06-27 23:20:24,194 INFO L125 PetriNetUnfolderBase]: For 21182/21182 co-relation queries the response was YES. [2024-06-27 23:20:24,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 529 events. 272/529 cut-off events. For 21182/21182 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2482 event pairs, 40 based on Foata normal form. 2/531 useless extension candidates. Maximal degree in co-relation 3631. Up to 396 conditions per place. [2024-06-27 23:20:24,198 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 46 changer transitions 0/134 dead transitions. [2024-06-27 23:20:24,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 134 transitions, 1641 flow [2024-06-27 23:20:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:20:24,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:20:24,201 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1307 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:20:24,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 134 transitions, 1641 flow [2024-06-27 23:20:24,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 1591 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:24,247 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1410 flow [2024-06-27 23:20:24,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1410, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-27 23:20:24,248 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2024-06-27 23:20:24,248 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1410 flow [2024-06-27 23:20:24,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:24,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:24,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:24,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:20:24,249 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 23:20:24,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash 354213566, now seen corresponding path program 7 times [2024-06-27 23:20:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757624057] [2024-06-27 23:20:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:25,251 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 23:20:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:25,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757624057] [2024-06-27 23:20:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757624057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:25,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786326197] [2024-06-27 23:20:25,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:25,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:25,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:25,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1410 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 23:20:25,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:25,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:25,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:25,553 INFO L124 PetriNetUnfolderBase]: 276/538 cut-off events. [2024-06-27 23:20:25,553 INFO L125 PetriNetUnfolderBase]: For 22226/22226 co-relation queries the response was YES. [2024-06-27 23:20:25,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 538 events. 276/538 cut-off events. For 22226/22226 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2544 event pairs, 44 based on Foata normal form. 2/540 useless extension candidates. Maximal degree in co-relation 3810. Up to 460 conditions per place. [2024-06-27 23:20:25,557 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 112 selfloop transitions, 20 changer transitions 0/135 dead transitions. [2024-06-27 23:20:25,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 135 transitions, 1730 flow [2024-06-27 23:20:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:20:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:20:25,558 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1410 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:20:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 135 transitions, 1730 flow [2024-06-27 23:20:25,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 135 transitions, 1579 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:25,596 INFO L231 Difference]: Finished difference. Result has 149 places, 125 transitions, 1335 flow [2024-06-27 23:20:25,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1335, PETRI_PLACES=149, PETRI_TRANSITIONS=125} [2024-06-27 23:20:25,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-27 23:20:25,597 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 125 transitions, 1335 flow [2024-06-27 23:20:25,597 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 23:20:25,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:25,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:20:25,597 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 23:20:25,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1750212282, now seen corresponding path program 8 times [2024-06-27 23:20:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:25,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030608694] [2024-06-27 23:20:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:26,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:26,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030608694] [2024-06-27 23:20:26,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030608694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:26,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:26,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:26,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488865281] [2024-06-27 23:20:26,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:26,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:26,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:26,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:26,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 125 transitions, 1335 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 23:20:26,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:26,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:26,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:26,995 INFO L124 PetriNetUnfolderBase]: 280/546 cut-off events. [2024-06-27 23:20:26,996 INFO L125 PetriNetUnfolderBase]: For 23781/23781 co-relation queries the response was YES. [2024-06-27 23:20:26,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3868 conditions, 546 events. 280/546 cut-off events. For 23781/23781 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2594 event pairs, 42 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3796. Up to 459 conditions per place. [2024-06-27 23:20:26,999 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 116 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-27 23:20:26,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 138 transitions, 1669 flow [2024-06-27 23:20:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:20:27,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:20:27,009 INFO L175 Difference]: Start difference. First operand has 149 places, 125 transitions, 1335 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:20:27,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 138 transitions, 1669 flow [2024-06-27 23:20:27,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 138 transitions, 1603 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:27,045 INFO L231 Difference]: Finished difference. Result has 152 places, 126 transitions, 1345 flow [2024-06-27 23:20:27,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1345, PETRI_PLACES=152, PETRI_TRANSITIONS=126} [2024-06-27 23:20:27,046 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-27 23:20:27,046 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 126 transitions, 1345 flow [2024-06-27 23:20:27,046 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 23:20:27,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:27,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:27,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:20:27,046 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 23:20:27,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:27,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1745625522, now seen corresponding path program 9 times [2024-06-27 23:20:27,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:27,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959297018] [2024-06-27 23:20:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:27,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959297018] [2024-06-27 23:20:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959297018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039779177] [2024-06-27 23:20:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:28,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:28,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 126 transitions, 1345 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 23:20:28,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:28,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:28,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:28,638 INFO L124 PetriNetUnfolderBase]: 284/554 cut-off events. [2024-06-27 23:20:28,638 INFO L125 PetriNetUnfolderBase]: For 24963/24963 co-relation queries the response was YES. [2024-06-27 23:20:28,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 554 events. 284/554 cut-off events. For 24963/24963 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2649 event pairs, 44 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3854. Up to 470 conditions per place. [2024-06-27 23:20:28,641 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 110 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-27 23:20:28,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 136 transitions, 1667 flow [2024-06-27 23:20:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:20:28,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:20:28,642 INFO L175 Difference]: Start difference. First operand has 152 places, 126 transitions, 1345 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:20:28,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 136 transitions, 1667 flow [2024-06-27 23:20:28,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 136 transitions, 1599 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:28,683 INFO L231 Difference]: Finished difference. Result has 153 places, 127 transitions, 1363 flow [2024-06-27 23:20:28,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1363, PETRI_PLACES=153, PETRI_TRANSITIONS=127} [2024-06-27 23:20:28,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 124 predicate places. [2024-06-27 23:20:28,683 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 127 transitions, 1363 flow [2024-06-27 23:20:28,684 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 23:20:28,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:28,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:20:28,684 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 23:20:28,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:28,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2020149712, now seen corresponding path program 10 times [2024-06-27 23:20:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:28,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170907810] [2024-06-27 23:20:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:29,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:29,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170907810] [2024-06-27 23:20:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170907810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038116392] [2024-06-27 23:20:29,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:29,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:29,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 127 transitions, 1363 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 23:20:29,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:29,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:29,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:30,046 INFO L124 PetriNetUnfolderBase]: 281/549 cut-off events. [2024-06-27 23:20:30,047 INFO L125 PetriNetUnfolderBase]: For 23789/23789 co-relation queries the response was YES. [2024-06-27 23:20:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 549 events. 281/549 cut-off events. For 23789/23789 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2630 event pairs, 47 based on Foata normal form. 2/551 useless extension candidates. Maximal degree in co-relation 3700. Up to 450 conditions per place. [2024-06-27 23:20:30,051 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 100 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-06-27 23:20:30,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 135 transitions, 1645 flow [2024-06-27 23:20:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:20:30,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:20:30,052 INFO L175 Difference]: Start difference. First operand has 153 places, 127 transitions, 1363 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:20:30,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 135 transitions, 1645 flow [2024-06-27 23:20:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 135 transitions, 1569 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:30,095 INFO L231 Difference]: Finished difference. Result has 155 places, 127 transitions, 1355 flow [2024-06-27 23:20:30,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1355, PETRI_PLACES=155, PETRI_TRANSITIONS=127} [2024-06-27 23:20:30,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 23:20:30,095 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 127 transitions, 1355 flow [2024-06-27 23:20:30,095 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 23:20:30,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:30,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:20:30,096 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 23:20:30,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 137947370, now seen corresponding path program 2 times [2024-06-27 23:20:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297236144] [2024-06-27 23:20:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297236144] [2024-06-27 23:20:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297236144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:31,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:31,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52468529] [2024-06-27 23:20:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:31,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:31,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 127 transitions, 1355 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:31,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:31,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:31,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:32,071 INFO L124 PetriNetUnfolderBase]: 284/552 cut-off events. [2024-06-27 23:20:32,071 INFO L125 PetriNetUnfolderBase]: For 23676/23676 co-relation queries the response was YES. [2024-06-27 23:20:32,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3793 conditions, 552 events. 284/552 cut-off events. For 23676/23676 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2640 event pairs, 47 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 3719. Up to 455 conditions per place. [2024-06-27 23:20:32,075 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 32 changer transitions 0/137 dead transitions. [2024-06-27 23:20:32,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 137 transitions, 1677 flow [2024-06-27 23:20:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:20:32,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 23:20:32,076 INFO L175 Difference]: Start difference. First operand has 155 places, 127 transitions, 1355 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:20:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 137 transitions, 1677 flow [2024-06-27 23:20:32,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 137 transitions, 1551 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:32,122 INFO L231 Difference]: Finished difference. Result has 157 places, 129 transitions, 1338 flow [2024-06-27 23:20:32,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=157, PETRI_TRANSITIONS=129} [2024-06-27 23:20:32,123 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-27 23:20:32,123 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 129 transitions, 1338 flow [2024-06-27 23:20:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:32,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:32,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:20:32,123 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 23:20:32,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2020144752, now seen corresponding path program 4 times [2024-06-27 23:20:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704413583] [2024-06-27 23:20:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:32,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:34,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:34,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704413583] [2024-06-27 23:20:34,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704413583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:34,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:34,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388974514] [2024-06-27 23:20:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:34,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:34,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:34,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:34,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 129 transitions, 1338 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:34,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:34,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:34,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:34,578 INFO L124 PetriNetUnfolderBase]: 282/549 cut-off events. [2024-06-27 23:20:34,578 INFO L125 PetriNetUnfolderBase]: For 22927/22927 co-relation queries the response was YES. [2024-06-27 23:20:34,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 549 events. 282/549 cut-off events. For 22927/22927 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2625 event pairs, 47 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3598. Up to 446 conditions per place. [2024-06-27 23:20:34,582 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 34 changer transitions 0/137 dead transitions. [2024-06-27 23:20:34,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 137 transitions, 1624 flow [2024-06-27 23:20:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:20:34,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 23:20:34,582 INFO L175 Difference]: Start difference. First operand has 157 places, 129 transitions, 1338 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:20:34,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 137 transitions, 1624 flow [2024-06-27 23:20:34,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 137 transitions, 1517 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:34,627 INFO L231 Difference]: Finished difference. Result has 159 places, 129 transitions, 1304 flow [2024-06-27 23:20:34,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1304, PETRI_PLACES=159, PETRI_TRANSITIONS=129} [2024-06-27 23:20:34,627 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 23:20:34,627 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 129 transitions, 1304 flow [2024-06-27 23:20:34,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:34,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:34,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:34,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:20:34,628 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 23:20:34,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 137947122, now seen corresponding path program 5 times [2024-06-27 23:20:34,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:34,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987935533] [2024-06-27 23:20:34,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:34,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987935533] [2024-06-27 23:20:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987935533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128489563] [2024-06-27 23:20:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:36,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:36,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:36,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 129 transitions, 1304 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:36,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:36,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:36,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:36,743 INFO L124 PetriNetUnfolderBase]: 298/579 cut-off events. [2024-06-27 23:20:36,743 INFO L125 PetriNetUnfolderBase]: For 27942/27942 co-relation queries the response was YES. [2024-06-27 23:20:36,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4025 conditions, 579 events. 298/579 cut-off events. For 27942/27942 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2797 event pairs, 47 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3949. Up to 441 conditions per place. [2024-06-27 23:20:36,747 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 99 selfloop transitions, 42 changer transitions 0/144 dead transitions. [2024-06-27 23:20:36,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 1814 flow [2024-06-27 23:20:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:20:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:20:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-27 23:20:36,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 23:20:36,747 INFO L175 Difference]: Start difference. First operand has 159 places, 129 transitions, 1304 flow. Second operand 8 states and 114 transitions. [2024-06-27 23:20:36,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 1814 flow [2024-06-27 23:20:36,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 144 transitions, 1676 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 23:20:36,796 INFO L231 Difference]: Finished difference. Result has 157 places, 134 transitions, 1369 flow [2024-06-27 23:20:36,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2024-06-27 23:20:36,796 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-27 23:20:36,796 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 1369 flow [2024-06-27 23:20:36,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:36,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:36,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:36,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:20:36,797 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 23:20:36,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:36,797 INFO L85 PathProgramCache]: Analyzing trace with hash 374122482, now seen corresponding path program 6 times [2024-06-27 23:20:36,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:36,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540014996] [2024-06-27 23:20:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:36,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:38,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540014996] [2024-06-27 23:20:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540014996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:38,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:38,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555921813] [2024-06-27 23:20:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:38,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:38,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:38,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:38,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 1369 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 23:20:38,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:38,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:38,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:39,234 INFO L124 PetriNetUnfolderBase]: 315/609 cut-off events. [2024-06-27 23:20:39,234 INFO L125 PetriNetUnfolderBase]: For 32163/32163 co-relation queries the response was YES. [2024-06-27 23:20:39,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 609 events. 315/609 cut-off events. For 32163/32163 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2969 event pairs, 91 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 4369. Up to 531 conditions per place. [2024-06-27 23:20:39,238 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2024-06-27 23:20:39,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1921 flow [2024-06-27 23:20:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:20:39,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 23:20:39,239 INFO L175 Difference]: Start difference. First operand has 157 places, 134 transitions, 1369 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:20:39,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1921 flow [2024-06-27 23:20:39,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 149 transitions, 1817 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 23:20:39,291 INFO L231 Difference]: Finished difference. Result has 163 places, 140 transitions, 1473 flow [2024-06-27 23:20:39,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1473, PETRI_PLACES=163, PETRI_TRANSITIONS=140} [2024-06-27 23:20:39,291 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 23:20:39,292 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 140 transitions, 1473 flow [2024-06-27 23:20:39,292 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 23:20:39,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:39,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:20:39,292 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 23:20:39,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash 137940612, now seen corresponding path program 7 times [2024-06-27 23:20:39,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703659995] [2024-06-27 23:20:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:39,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:41,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703659995] [2024-06-27 23:20:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703659995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:41,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661780245] [2024-06-27 23:20:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:41,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:41,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:41,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 140 transitions, 1473 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:41,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:41,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:41,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:41,955 INFO L124 PetriNetUnfolderBase]: 313/607 cut-off events. [2024-06-27 23:20:41,955 INFO L125 PetriNetUnfolderBase]: For 30859/30859 co-relation queries the response was YES. [2024-06-27 23:20:41,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 607 events. 313/607 cut-off events. For 30859/30859 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2946 event pairs, 47 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 4300. Up to 468 conditions per place. [2024-06-27 23:20:41,959 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 44 changer transitions 0/151 dead transitions. [2024-06-27 23:20:41,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 151 transitions, 1931 flow [2024-06-27 23:20:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:20:41,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 23:20:41,962 INFO L175 Difference]: Start difference. First operand has 163 places, 140 transitions, 1473 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:20:41,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 151 transitions, 1931 flow [2024-06-27 23:20:42,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 151 transitions, 1835 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 23:20:42,016 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 1518 flow [2024-06-27 23:20:42,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1518, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2024-06-27 23:20:42,016 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 23:20:42,016 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 1518 flow [2024-06-27 23:20:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:42,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:42,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:42,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:20:42,017 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 23:20:42,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1162255990, now seen corresponding path program 8 times [2024-06-27 23:20:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:42,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528045539] [2024-06-27 23:20:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:44,058 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 23:20:44,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528045539] [2024-06-27 23:20:44,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528045539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:44,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:44,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:44,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618393547] [2024-06-27 23:20:44,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:44,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:44,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:44,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:44,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:44,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 1518 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:44,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:44,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:44,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:44,698 INFO L124 PetriNetUnfolderBase]: 321/625 cut-off events. [2024-06-27 23:20:44,699 INFO L125 PetriNetUnfolderBase]: For 32582/32582 co-relation queries the response was YES. [2024-06-27 23:20:44,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 625 events. 321/625 cut-off events. For 32582/32582 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3082 event pairs, 46 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 4475. Up to 352 conditions per place. [2024-06-27 23:20:44,703 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 80 selfloop transitions, 78 changer transitions 0/161 dead transitions. [2024-06-27 23:20:44,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 161 transitions, 2370 flow [2024-06-27 23:20:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-27 23:20:44,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-27 23:20:44,704 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 1518 flow. Second operand 9 states and 128 transitions. [2024-06-27 23:20:44,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 161 transitions, 2370 flow [2024-06-27 23:20:44,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 161 transitions, 2255 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:20:44,758 INFO L231 Difference]: Finished difference. Result has 171 places, 150 transitions, 1805 flow [2024-06-27 23:20:44,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1805, PETRI_PLACES=171, PETRI_TRANSITIONS=150} [2024-06-27 23:20:44,758 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-27 23:20:44,758 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 150 transitions, 1805 flow [2024-06-27 23:20:44,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:44,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:44,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:44,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:20:44,759 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 23:20:44,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:44,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1613409334, now seen corresponding path program 3 times [2024-06-27 23:20:44,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714673320] [2024-06-27 23:20:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:46,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:46,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714673320] [2024-06-27 23:20:46,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714673320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:46,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:46,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:46,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171726226] [2024-06-27 23:20:46,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:46,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:46,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:46,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:46,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:46,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 150 transitions, 1805 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:46,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:46,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:46,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:46,835 INFO L124 PetriNetUnfolderBase]: 319/621 cut-off events. [2024-06-27 23:20:46,835 INFO L125 PetriNetUnfolderBase]: For 32594/32594 co-relation queries the response was YES. [2024-06-27 23:20:46,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4619 conditions, 621 events. 319/621 cut-off events. For 32594/32594 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3049 event pairs, 46 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 4537. Up to 448 conditions per place. [2024-06-27 23:20:46,841 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 100 selfloop transitions, 56 changer transitions 0/159 dead transitions. [2024-06-27 23:20:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 159 transitions, 2152 flow [2024-06-27 23:20:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:20:46,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:20:46,845 INFO L175 Difference]: Start difference. First operand has 171 places, 150 transitions, 1805 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:20:46,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 159 transitions, 2152 flow [2024-06-27 23:20:46,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 159 transitions, 1863 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:46,899 INFO L231 Difference]: Finished difference. Result has 173 places, 151 transitions, 1652 flow [2024-06-27 23:20:46,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1652, PETRI_PLACES=173, PETRI_TRANSITIONS=151} [2024-06-27 23:20:46,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 23:20:46,899 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 151 transitions, 1652 flow [2024-06-27 23:20:46,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:46,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:46,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:46,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:20:46,900 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 23:20:46,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash 374131100, now seen corresponding path program 4 times [2024-06-27 23:20:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:46,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347734911] [2024-06-27 23:20:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:48,881 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 23:20:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:48,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347734911] [2024-06-27 23:20:48,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347734911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:48,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:48,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:48,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541844129] [2024-06-27 23:20:48,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:49,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:49,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 151 transitions, 1652 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:49,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:49,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:49,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:49,365 INFO L124 PetriNetUnfolderBase]: 322/625 cut-off events. [2024-06-27 23:20:49,365 INFO L125 PetriNetUnfolderBase]: For 32073/32073 co-relation queries the response was YES. [2024-06-27 23:20:49,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4381 conditions, 625 events. 322/625 cut-off events. For 32073/32073 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3061 event pairs, 90 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 4300. Up to 553 conditions per place. [2024-06-27 23:20:49,369 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 141 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2024-06-27 23:20:49,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 164 transitions, 2161 flow [2024-06-27 23:20:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:20:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:20:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:20:49,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:20:49,370 INFO L175 Difference]: Start difference. First operand has 173 places, 151 transitions, 1652 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:20:49,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 164 transitions, 2161 flow [2024-06-27 23:20:49,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 164 transitions, 2006 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:49,429 INFO L231 Difference]: Finished difference. Result has 176 places, 154 transitions, 1607 flow [2024-06-27 23:20:49,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=176, PETRI_TRANSITIONS=154} [2024-06-27 23:20:49,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 23:20:49,429 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 154 transitions, 1607 flow [2024-06-27 23:20:49,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:49,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:49,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:49,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:20:49,430 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 23:20:49,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1170536958, now seen corresponding path program 5 times [2024-06-27 23:20:49,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:49,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301329688] [2024-06-27 23:20:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:49,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:51,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301329688] [2024-06-27 23:20:51,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301329688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540805628] [2024-06-27 23:20:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:51,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:51,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:51,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 154 transitions, 1607 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:51,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:51,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:52,265 INFO L124 PetriNetUnfolderBase]: 319/619 cut-off events. [2024-06-27 23:20:52,265 INFO L125 PetriNetUnfolderBase]: For 32086/32086 co-relation queries the response was YES. [2024-06-27 23:20:52,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 619 events. 319/619 cut-off events. For 32086/32086 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3049 event pairs, 90 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 4109. Up to 555 conditions per place. [2024-06-27 23:20:52,269 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 143 selfloop transitions, 16 changer transitions 0/162 dead transitions. [2024-06-27 23:20:52,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 162 transitions, 1943 flow [2024-06-27 23:20:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:52,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:20:52,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:20:52,270 INFO L175 Difference]: Start difference. First operand has 176 places, 154 transitions, 1607 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:20:52,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 162 transitions, 1943 flow [2024-06-27 23:20:52,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 162 transitions, 1861 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:20:52,328 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 1562 flow [2024-06-27 23:20:52,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1562, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2024-06-27 23:20:52,328 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-27 23:20:52,329 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 1562 flow [2024-06-27 23:20:52,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:52,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:52,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:20:52,329 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 23:20:52,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash 365848272, now seen corresponding path program 9 times [2024-06-27 23:20:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102394026] [2024-06-27 23:20:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:54,223 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 23:20:54,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:54,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102394026] [2024-06-27 23:20:54,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102394026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:54,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:54,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710529239] [2024-06-27 23:20:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:54,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:20:54,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 1562 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:54,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:54,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:20:54,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:54,712 INFO L124 PetriNetUnfolderBase]: 315/614 cut-off events. [2024-06-27 23:20:54,712 INFO L125 PetriNetUnfolderBase]: For 31381/31381 co-relation queries the response was YES. [2024-06-27 23:20:54,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 614 events. 315/614 cut-off events. For 31381/31381 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3013 event pairs, 46 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3935. Up to 347 conditions per place. [2024-06-27 23:20:54,716 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 77 changer transitions 0/165 dead transitions. [2024-06-27 23:20:54,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 2228 flow [2024-06-27 23:20:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 23:20:54,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 23:20:54,717 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 1562 flow. Second operand 9 states and 129 transitions. [2024-06-27 23:20:54,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 2228 flow [2024-06-27 23:20:54,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 165 transitions, 2155 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:20:54,764 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 1650 flow [2024-06-27 23:20:54,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2024-06-27 23:20:54,765 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-27 23:20:54,765 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 1650 flow [2024-06-27 23:20:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:54,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:54,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:20:54,765 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 23:20:54,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -723323140, now seen corresponding path program 1 times [2024-06-27 23:20:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983698815] [2024-06-27 23:20:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983698815] [2024-06-27 23:20:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983698815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:56,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:20:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497451677] [2024-06-27 23:20:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:20:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:20:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:20:56,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:56,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:56,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:56,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:56,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:56,380 INFO L124 PetriNetUnfolderBase]: 319/622 cut-off events. [2024-06-27 23:20:56,380 INFO L125 PetriNetUnfolderBase]: For 33215/33215 co-relation queries the response was YES. [2024-06-27 23:20:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 622 events. 319/622 cut-off events. For 33215/33215 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3093 event pairs, 46 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4095. Up to 519 conditions per place. [2024-06-27 23:20:56,385 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 149 selfloop transitions, 21 changer transitions 0/173 dead transitions. [2024-06-27 23:20:56,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 173 transitions, 2056 flow [2024-06-27 23:20:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:20:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:20:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:20:56,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 23:20:56,385 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 1650 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:20:56,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 173 transitions, 2056 flow [2024-06-27 23:20:56,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 173 transitions, 1878 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:56,454 INFO L231 Difference]: Finished difference. Result has 181 places, 155 transitions, 1540 flow [2024-06-27 23:20:56,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=181, PETRI_TRANSITIONS=155} [2024-06-27 23:20:56,455 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-27 23:20:56,455 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 155 transitions, 1540 flow [2024-06-27 23:20:56,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:20:56,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:56,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:56,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:20:56,455 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 23:20:56,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:56,455 INFO L85 PathProgramCache]: Analyzing trace with hash 385918650, now seen corresponding path program 2 times [2024-06-27 23:20:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:56,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511479252] [2024-06-27 23:20:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:56,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:57,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511479252] [2024-06-27 23:20:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511479252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:57,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:20:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208304843] [2024-06-27 23:20:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:20:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:20:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:20:57,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:57,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 155 transitions, 1540 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 23:20:57,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:57,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:57,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:58,260 INFO L124 PetriNetUnfolderBase]: 326/635 cut-off events. [2024-06-27 23:20:58,260 INFO L125 PetriNetUnfolderBase]: For 33519/33519 co-relation queries the response was YES. [2024-06-27 23:20:58,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4125 conditions, 635 events. 326/635 cut-off events. For 33519/33519 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3168 event pairs, 57 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4041. Up to 546 conditions per place. [2024-06-27 23:20:58,264 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 148 selfloop transitions, 22 changer transitions 0/173 dead transitions. [2024-06-27 23:20:58,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 173 transitions, 1958 flow [2024-06-27 23:20:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:20:58,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-27 23:20:58,265 INFO L175 Difference]: Start difference. First operand has 181 places, 155 transitions, 1540 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:20:58,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 173 transitions, 1958 flow [2024-06-27 23:20:58,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 173 transitions, 1900 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:20:58,327 INFO L231 Difference]: Finished difference. Result has 183 places, 158 transitions, 1579 flow [2024-06-27 23:20:58,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1579, PETRI_PLACES=183, PETRI_TRANSITIONS=158} [2024-06-27 23:20:58,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-06-27 23:20:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 158 transitions, 1579 flow [2024-06-27 23:20:58,327 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 23:20:58,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:20:58,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:20:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:20:58,328 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 23:20:58,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:20:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash 403328250, now seen corresponding path program 3 times [2024-06-27 23:20:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:20:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753977711] [2024-06-27 23:20:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:20:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:20:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:20:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:20:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:20:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753977711] [2024-06-27 23:20:59,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753977711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:20:59,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:20:59,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:20:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790890525] [2024-06-27 23:20:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:20:59,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:20:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:20:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:20:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:20:59,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:20:59,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 158 transitions, 1579 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 23:20:59,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:20:59,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:20:59,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:20:59,937 INFO L124 PetriNetUnfolderBase]: 330/642 cut-off events. [2024-06-27 23:20:59,937 INFO L125 PetriNetUnfolderBase]: For 35244/35244 co-relation queries the response was YES. [2024-06-27 23:20:59,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 642 events. 330/642 cut-off events. For 35244/35244 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3203 event pairs, 42 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 4107. Up to 533 conditions per place. [2024-06-27 23:20:59,941 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 144 selfloop transitions, 25 changer transitions 0/172 dead transitions. [2024-06-27 23:20:59,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 172 transitions, 1973 flow [2024-06-27 23:20:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:20:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:20:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:20:59,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:20:59,942 INFO L175 Difference]: Start difference. First operand has 183 places, 158 transitions, 1579 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:20:59,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 172 transitions, 1973 flow [2024-06-27 23:21:00,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 1914 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:21:00,013 INFO L231 Difference]: Finished difference. Result has 186 places, 159 transitions, 1601 flow [2024-06-27 23:21:00,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1601, PETRI_PLACES=186, PETRI_TRANSITIONS=159} [2024-06-27 23:21:00,014 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-27 23:21:00,014 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 159 transitions, 1601 flow [2024-06-27 23:21:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 23:21:00,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:00,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:21:00,014 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 23:21:00,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1905985658, now seen corresponding path program 4 times [2024-06-27 23:21:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:00,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37722241] [2024-06-27 23:21:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37722241] [2024-06-27 23:21:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37722241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:21:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160457602] [2024-06-27 23:21:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:21:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:21:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:21:01,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:21:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 159 transitions, 1601 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:01,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:21:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:01,586 INFO L124 PetriNetUnfolderBase]: 309/623 cut-off events. [2024-06-27 23:21:01,586 INFO L125 PetriNetUnfolderBase]: For 37110/37113 co-relation queries the response was YES. [2024-06-27 23:21:01,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 623 events. 309/623 cut-off events. For 37110/37113 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3227 event pairs, 15 based on Foata normal form. 5/625 useless extension candidates. Maximal degree in co-relation 3916. Up to 304 conditions per place. [2024-06-27 23:21:01,591 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 82 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2024-06-27 23:21:01,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 172 transitions, 1885 flow [2024-06-27 23:21:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:21:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:21:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-27 23:21:01,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-27 23:21:01,592 INFO L175 Difference]: Start difference. First operand has 186 places, 159 transitions, 1601 flow. Second operand 8 states and 111 transitions. [2024-06-27 23:21:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 172 transitions, 1885 flow [2024-06-27 23:21:01,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 172 transitions, 1816 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:01,660 INFO L231 Difference]: Finished difference. Result has 187 places, 160 transitions, 1643 flow [2024-06-27 23:21:01,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1643, PETRI_PLACES=187, PETRI_TRANSITIONS=160} [2024-06-27 23:21:01,660 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places. [2024-06-27 23:21:01,661 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 160 transitions, 1643 flow [2024-06-27 23:21:01,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:01,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:01,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:21:01,661 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 23:21:01,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1051537636, now seen corresponding path program 5 times [2024-06-27 23:21:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444537305] [2024-06-27 23:21:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:03,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:03,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444537305] [2024-06-27 23:21:03,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444537305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:03,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:03,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:03,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641920779] [2024-06-27 23:21:03,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:03,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:03,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:03,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:03,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:03,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 160 transitions, 1643 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:03,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:03,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:04,017 INFO L124 PetriNetUnfolderBase]: 338/658 cut-off events. [2024-06-27 23:21:04,017 INFO L125 PetriNetUnfolderBase]: For 38141/38141 co-relation queries the response was YES. [2024-06-27 23:21:04,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 658 events. 338/658 cut-off events. For 38141/38141 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3344 event pairs, 44 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4285. Up to 561 conditions per place. [2024-06-27 23:21:04,022 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 144 selfloop transitions, 27 changer transitions 0/174 dead transitions. [2024-06-27 23:21:04,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 174 transitions, 2045 flow [2024-06-27 23:21:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:21:04,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:21:04,023 INFO L175 Difference]: Start difference. First operand has 187 places, 160 transitions, 1643 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:21:04,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 174 transitions, 2045 flow [2024-06-27 23:21:04,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 174 transitions, 1970 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 23:21:04,099 INFO L231 Difference]: Finished difference. Result has 192 places, 161 transitions, 1656 flow [2024-06-27 23:21:04,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1656, PETRI_PLACES=192, PETRI_TRANSITIONS=161} [2024-06-27 23:21:04,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 23:21:04,099 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 161 transitions, 1656 flow [2024-06-27 23:21:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:04,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:04,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:04,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:21:04,100 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 23:21:04,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1056900016, now seen corresponding path program 6 times [2024-06-27 23:21:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:04,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94129732] [2024-06-27 23:21:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94129732] [2024-06-27 23:21:05,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94129732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:05,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:05,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:05,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910517076] [2024-06-27 23:21:05,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:05,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:05,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:05,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:05,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 161 transitions, 1656 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:05,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:05,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:05,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:06,320 INFO L124 PetriNetUnfolderBase]: 342/666 cut-off events. [2024-06-27 23:21:06,320 INFO L125 PetriNetUnfolderBase]: For 35601/35601 co-relation queries the response was YES. [2024-06-27 23:21:06,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 666 events. 342/666 cut-off events. For 35601/35601 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3385 event pairs, 46 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4255. Up to 557 conditions per place. [2024-06-27 23:21:06,325 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 33 changer transitions 0/175 dead transitions. [2024-06-27 23:21:06,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 175 transitions, 2056 flow [2024-06-27 23:21:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:21:06,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 23:21:06,326 INFO L175 Difference]: Start difference. First operand has 192 places, 161 transitions, 1656 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:21:06,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 175 transitions, 2056 flow [2024-06-27 23:21:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 175 transitions, 1984 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:06,396 INFO L231 Difference]: Finished difference. Result has 194 places, 162 transitions, 1680 flow [2024-06-27 23:21:06,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=184, 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=10, PETRI_FLOW=1680, PETRI_PLACES=194, PETRI_TRANSITIONS=162} [2024-06-27 23:21:06,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:21:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 162 transitions, 1680 flow [2024-06-27 23:21:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:06,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:06,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:06,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:21:06,398 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 23:21:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1606700326, now seen corresponding path program 7 times [2024-06-27 23:21:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455334970] [2024-06-27 23:21:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:08,144 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 23:21:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455334970] [2024-06-27 23:21:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455334970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:08,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068989865] [2024-06-27 23:21:08,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:08,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:08,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:08,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:08,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:08,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:08,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 162 transitions, 1680 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:08,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:08,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:08,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:08,563 INFO L124 PetriNetUnfolderBase]: 346/674 cut-off events. [2024-06-27 23:21:08,563 INFO L125 PetriNetUnfolderBase]: For 36902/36902 co-relation queries the response was YES. [2024-06-27 23:21:08,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 674 events. 346/674 cut-off events. For 36902/36902 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3438 event pairs, 44 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 4324. Up to 572 conditions per place. [2024-06-27 23:21:08,568 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 148 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2024-06-27 23:21:08,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 177 transitions, 2088 flow [2024-06-27 23:21:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 23:21:08,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:21:08,573 INFO L175 Difference]: Start difference. First operand has 194 places, 162 transitions, 1680 flow. Second operand 10 states and 120 transitions. [2024-06-27 23:21:08,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 177 transitions, 2088 flow [2024-06-27 23:21:08,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 177 transitions, 2002 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:08,637 INFO L231 Difference]: Finished difference. Result has 196 places, 163 transitions, 1678 flow [2024-06-27 23:21:08,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1678, PETRI_PLACES=196, PETRI_TRANSITIONS=163} [2024-06-27 23:21:08,638 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-27 23:21:08,638 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 163 transitions, 1678 flow [2024-06-27 23:21:08,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:08,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:08,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:08,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:21:08,639 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 23:21:08,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1601184124, now seen corresponding path program 1 times [2024-06-27 23:21:08,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:08,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201887018] [2024-06-27 23:21:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:08,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:11,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:11,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201887018] [2024-06-27 23:21:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201887018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:11,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:11,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:11,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796946977] [2024-06-27 23:21:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:11,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:11,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:11,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:11,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 163 transitions, 1678 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:11,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:11,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:11,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:11,714 INFO L124 PetriNetUnfolderBase]: 349/679 cut-off events. [2024-06-27 23:21:11,714 INFO L125 PetriNetUnfolderBase]: For 36491/36491 co-relation queries the response was YES. [2024-06-27 23:21:11,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 679 events. 349/679 cut-off events. For 36491/36491 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3472 event pairs, 46 based on Foata normal form. 1/680 useless extension candidates. Maximal degree in co-relation 4355. Up to 510 conditions per place. [2024-06-27 23:21:11,719 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 120 selfloop transitions, 55 changer transitions 0/178 dead transitions. [2024-06-27 23:21:11,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 178 transitions, 2340 flow [2024-06-27 23:21:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:21:11,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:21:11,720 INFO L175 Difference]: Start difference. First operand has 196 places, 163 transitions, 1678 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:21:11,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 178 transitions, 2340 flow [2024-06-27 23:21:11,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 178 transitions, 2266 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:11,789 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1769 flow [2024-06-27 23:21:11,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-27 23:21:11,789 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-27 23:21:11,790 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1769 flow [2024-06-27 23:21:11,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:11,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:11,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:11,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:21:11,790 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 23:21:11,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1600974595, now seen corresponding path program 1 times [2024-06-27 23:21:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583210739] [2024-06-27 23:21:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:14,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583210739] [2024-06-27 23:21:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583210739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:14,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341296006] [2024-06-27 23:21:14,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:14,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:14,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:14,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1769 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:14,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:14,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:14,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:14,967 INFO L124 PetriNetUnfolderBase]: 365/715 cut-off events. [2024-06-27 23:21:14,967 INFO L125 PetriNetUnfolderBase]: For 52763/52763 co-relation queries the response was YES. [2024-06-27 23:21:14,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 715 events. 365/715 cut-off events. For 52763/52763 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3705 event pairs, 50 based on Foata normal form. 10/725 useless extension candidates. Maximal degree in co-relation 4608. Up to 529 conditions per place. [2024-06-27 23:21:14,972 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 127 selfloop transitions, 44 changer transitions 7/181 dead transitions. [2024-06-27 23:21:14,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 181 transitions, 2231 flow [2024-06-27 23:21:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:14,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:21:14,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:21:14,985 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1769 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:21:14,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 181 transitions, 2231 flow [2024-06-27 23:21:15,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 2081 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:15,063 INFO L231 Difference]: Finished difference. Result has 199 places, 162 transitions, 1709 flow [2024-06-27 23:21:15,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1709, PETRI_PLACES=199, PETRI_TRANSITIONS=162} [2024-06-27 23:21:15,064 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:21:15,064 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 162 transitions, 1709 flow [2024-06-27 23:21:15,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:15,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:15,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:15,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:21:15,065 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 23:21:15,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1600974874, now seen corresponding path program 2 times [2024-06-27 23:21:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:15,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589300342] [2024-06-27 23:21:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:17,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:17,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589300342] [2024-06-27 23:21:17,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589300342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:17,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:17,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:17,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899838235] [2024-06-27 23:21:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:17,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:17,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 162 transitions, 1709 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:17,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:17,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:17,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:17,583 INFO L124 PetriNetUnfolderBase]: 352/695 cut-off events. [2024-06-27 23:21:17,583 INFO L125 PetriNetUnfolderBase]: For 37582/37582 co-relation queries the response was YES. [2024-06-27 23:21:17,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 695 events. 352/695 cut-off events. For 37582/37582 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3602 event pairs, 50 based on Foata normal form. 1/696 useless extension candidates. Maximal degree in co-relation 4414. Up to 530 conditions per place. [2024-06-27 23:21:17,587 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 117 selfloop transitions, 54 changer transitions 0/174 dead transitions. [2024-06-27 23:21:17,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 174 transitions, 2199 flow [2024-06-27 23:21:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:21:17,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 23:21:17,597 INFO L175 Difference]: Start difference. First operand has 199 places, 162 transitions, 1709 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:21:17,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 174 transitions, 2199 flow [2024-06-27 23:21:17,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 174 transitions, 2048 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:17,675 INFO L231 Difference]: Finished difference. Result has 200 places, 162 transitions, 1671 flow [2024-06-27 23:21:17,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1671, PETRI_PLACES=200, PETRI_TRANSITIONS=162} [2024-06-27 23:21:17,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 23:21:17,676 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 162 transitions, 1671 flow [2024-06-27 23:21:17,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:17,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:17,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:21:17,676 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 23:21:17,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1600982314, now seen corresponding path program 3 times [2024-06-27 23:21:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733311167] [2024-06-27 23:21:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:20,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:20,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733311167] [2024-06-27 23:21:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733311167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:20,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:20,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342421384] [2024-06-27 23:21:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:20,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:20,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:20,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 162 transitions, 1671 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:20,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:20,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:20,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:20,713 INFO L124 PetriNetUnfolderBase]: 350/696 cut-off events. [2024-06-27 23:21:20,713 INFO L125 PetriNetUnfolderBase]: For 35866/35866 co-relation queries the response was YES. [2024-06-27 23:21:20,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 696 events. 350/696 cut-off events. For 35866/35866 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3604 event pairs, 54 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 4275. Up to 528 conditions per place. [2024-06-27 23:21:20,718 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 54 changer transitions 0/173 dead transitions. [2024-06-27 23:21:20,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 173 transitions, 2037 flow [2024-06-27 23:21:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:21:20,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 23:21:20,719 INFO L175 Difference]: Start difference. First operand has 200 places, 162 transitions, 1671 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:21:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 173 transitions, 2037 flow [2024-06-27 23:21:20,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 173 transitions, 1862 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:20,793 INFO L231 Difference]: Finished difference. Result has 202 places, 162 transitions, 1609 flow [2024-06-27 23:21:20,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1609, PETRI_PLACES=202, PETRI_TRANSITIONS=162} [2024-06-27 23:21:20,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 23:21:20,793 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 162 transitions, 1609 flow [2024-06-27 23:21:20,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:20,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:20,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:20,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:21:20,794 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 23:21:20,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1581656472, now seen corresponding path program 8 times [2024-06-27 23:21:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874508044] [2024-06-27 23:21:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:22,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:22,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874508044] [2024-06-27 23:21:22,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874508044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:22,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:22,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511658194] [2024-06-27 23:21:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:22,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:22,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 162 transitions, 1609 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 23:21:22,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:22,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:22,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:22,762 INFO L124 PetriNetUnfolderBase]: 354/701 cut-off events. [2024-06-27 23:21:22,762 INFO L125 PetriNetUnfolderBase]: For 39243/39243 co-relation queries the response was YES. [2024-06-27 23:21:22,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 701 events. 354/701 cut-off events. For 39243/39243 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3664 event pairs, 52 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4264. Up to 607 conditions per place. [2024-06-27 23:21:22,767 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-06-27 23:21:22,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 175 transitions, 2011 flow [2024-06-27 23:21:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:21:22,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:21:22,774 INFO L175 Difference]: Start difference. First operand has 202 places, 162 transitions, 1609 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:21:22,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 175 transitions, 2011 flow [2024-06-27 23:21:22,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 175 transitions, 1871 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:22,850 INFO L231 Difference]: Finished difference. Result has 202 places, 163 transitions, 1545 flow [2024-06-27 23:21:22,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1545, PETRI_PLACES=202, PETRI_TRANSITIONS=163} [2024-06-27 23:21:22,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 23:21:22,851 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 163 transitions, 1545 flow [2024-06-27 23:21:22,851 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 23:21:22,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:22,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:22,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:21:22,851 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 23:21:22,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1205497144, now seen corresponding path program 9 times [2024-06-27 23:21:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045002182] [2024-06-27 23:21:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045002182] [2024-06-27 23:21:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045002182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438616773] [2024-06-27 23:21:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:24,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:24,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 163 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:24,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:24,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:24,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:25,283 INFO L124 PetriNetUnfolderBase]: 358/713 cut-off events. [2024-06-27 23:21:25,283 INFO L125 PetriNetUnfolderBase]: For 40409/40409 co-relation queries the response was YES. [2024-06-27 23:21:25,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 713 events. 358/713 cut-off events. For 40409/40409 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3732 event pairs, 58 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4271. Up to 620 conditions per place. [2024-06-27 23:21:25,288 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-27 23:21:25,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 176 transitions, 1956 flow [2024-06-27 23:21:25,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:21:25,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:21:25,289 INFO L175 Difference]: Start difference. First operand has 202 places, 163 transitions, 1545 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:21:25,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 176 transitions, 1956 flow [2024-06-27 23:21:25,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 176 transitions, 1890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:25,360 INFO L231 Difference]: Finished difference. Result has 205 places, 165 transitions, 1571 flow [2024-06-27 23:21:25,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1571, PETRI_PLACES=205, PETRI_TRANSITIONS=165} [2024-06-27 23:21:25,361 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 23:21:25,361 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 165 transitions, 1571 flow [2024-06-27 23:21:25,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:25,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:25,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:25,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:21:25,361 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 23:21:25,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:25,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1116783514, now seen corresponding path program 10 times [2024-06-27 23:21:25,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:25,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168785341] [2024-06-27 23:21:25,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:25,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:26,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:26,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168785341] [2024-06-27 23:21:26,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168785341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:26,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:26,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:26,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748388640] [2024-06-27 23:21:26,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:26,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:26,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:26,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:26,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:26,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 165 transitions, 1571 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:26,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:26,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:26,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:27,341 INFO L124 PetriNetUnfolderBase]: 362/721 cut-off events. [2024-06-27 23:21:27,341 INFO L125 PetriNetUnfolderBase]: For 41822/41822 co-relation queries the response was YES. [2024-06-27 23:21:27,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 721 events. 362/721 cut-off events. For 41822/41822 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3814 event pairs, 54 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 4332. Up to 614 conditions per place. [2024-06-27 23:21:27,347 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 157 selfloop transitions, 20 changer transitions 0/180 dead transitions. [2024-06-27 23:21:27,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 180 transitions, 1993 flow [2024-06-27 23:21:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:21:27,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:21:27,348 INFO L175 Difference]: Start difference. First operand has 205 places, 165 transitions, 1571 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:21:27,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 180 transitions, 1993 flow [2024-06-27 23:21:27,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 180 transitions, 1926 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:27,421 INFO L231 Difference]: Finished difference. Result has 208 places, 166 transitions, 1582 flow [2024-06-27 23:21:27,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1582, PETRI_PLACES=208, PETRI_TRANSITIONS=166} [2024-06-27 23:21:27,421 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 179 predicate places. [2024-06-27 23:21:27,422 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 166 transitions, 1582 flow [2024-06-27 23:21:27,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:27,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:27,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:27,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:21:27,422 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 23:21:27,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:27,423 INFO L85 PathProgramCache]: Analyzing trace with hash 489918498, now seen corresponding path program 11 times [2024-06-27 23:21:27,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:27,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737880259] [2024-06-27 23:21:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737880259] [2024-06-27 23:21:29,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737880259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:29,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:29,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:29,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280351022] [2024-06-27 23:21:29,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:29,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:29,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:29,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:29,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 166 transitions, 1582 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 23:21:29,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:29,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:29,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:29,871 INFO L124 PetriNetUnfolderBase]: 366/729 cut-off events. [2024-06-27 23:21:29,871 INFO L125 PetriNetUnfolderBase]: For 43281/43281 co-relation queries the response was YES. [2024-06-27 23:21:29,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 729 events. 366/729 cut-off events. For 43281/43281 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3861 event pairs, 58 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 4387. Up to 621 conditions per place. [2024-06-27 23:21:29,876 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 144 selfloop transitions, 30 changer transitions 0/177 dead transitions. [2024-06-27 23:21:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 177 transitions, 1988 flow [2024-06-27 23:21:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:21:29,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:21:29,877 INFO L175 Difference]: Start difference. First operand has 208 places, 166 transitions, 1582 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:21:29,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 177 transitions, 1988 flow [2024-06-27 23:21:29,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 177 transitions, 1920 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:29,961 INFO L231 Difference]: Finished difference. Result has 209 places, 167 transitions, 1614 flow [2024-06-27 23:21:29,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1614, PETRI_PLACES=209, PETRI_TRANSITIONS=167} [2024-06-27 23:21:29,961 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-27 23:21:29,962 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 167 transitions, 1614 flow [2024-06-27 23:21:29,962 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 23:21:29,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:29,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:29,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:21:29,962 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 23:21:29,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 484556118, now seen corresponding path program 12 times [2024-06-27 23:21:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:29,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987512186] [2024-06-27 23:21:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:32,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:32,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987512186] [2024-06-27 23:21:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987512186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:32,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835598825] [2024-06-27 23:21:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:32,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:32,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:32,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:32,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 167 transitions, 1614 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 23:21:32,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:32,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:32,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:32,401 INFO L124 PetriNetUnfolderBase]: 370/737 cut-off events. [2024-06-27 23:21:32,401 INFO L125 PetriNetUnfolderBase]: For 44679/44679 co-relation queries the response was YES. [2024-06-27 23:21:32,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 737 events. 370/737 cut-off events. For 44679/44679 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3911 event pairs, 60 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 4457. Up to 638 conditions per place. [2024-06-27 23:21:32,406 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 150 selfloop transitions, 25 changer transitions 0/178 dead transitions. [2024-06-27 23:21:32,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 178 transitions, 2024 flow [2024-06-27 23:21:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:21:32,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 23:21:32,407 INFO L175 Difference]: Start difference. First operand has 209 places, 167 transitions, 1614 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:21:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 178 transitions, 2024 flow [2024-06-27 23:21:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 178 transitions, 1934 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:32,492 INFO L231 Difference]: Finished difference. Result has 211 places, 168 transitions, 1616 flow [2024-06-27 23:21:32,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1616, PETRI_PLACES=211, PETRI_TRANSITIONS=168} [2024-06-27 23:21:32,493 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-27 23:21:32,493 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 168 transitions, 1616 flow [2024-06-27 23:21:32,493 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 23:21:32,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:32,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:21:32,493 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 23:21:32,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 484408248, now seen corresponding path program 13 times [2024-06-27 23:21:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989445191] [2024-06-27 23:21:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:34,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:34,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989445191] [2024-06-27 23:21:34,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989445191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:34,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:34,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:34,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667995701] [2024-06-27 23:21:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 168 transitions, 1616 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:34,865 INFO L124 PetriNetUnfolderBase]: 374/745 cut-off events. [2024-06-27 23:21:34,865 INFO L125 PetriNetUnfolderBase]: For 46117/46117 co-relation queries the response was YES. [2024-06-27 23:21:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 745 events. 374/745 cut-off events. For 46117/46117 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3990 event pairs, 58 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4500. Up to 641 conditions per place. [2024-06-27 23:21:34,871 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 153 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2024-06-27 23:21:34,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 180 transitions, 2034 flow [2024-06-27 23:21:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:21:34,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:21:34,872 INFO L175 Difference]: Start difference. First operand has 211 places, 168 transitions, 1616 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:21:34,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 180 transitions, 2034 flow [2024-06-27 23:21:34,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 180 transitions, 1952 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:34,953 INFO L231 Difference]: Finished difference. Result has 214 places, 169 transitions, 1626 flow [2024-06-27 23:21:34,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1626, PETRI_PLACES=214, PETRI_TRANSITIONS=169} [2024-06-27 23:21:34,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-27 23:21:34,953 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 169 transitions, 1626 flow [2024-06-27 23:21:34,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:34,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:34,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:21:34,954 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 23:21:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1805379574, now seen corresponding path program 14 times [2024-06-27 23:21:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828280367] [2024-06-27 23:21:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:36,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828280367] [2024-06-27 23:21:36,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828280367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:36,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:36,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:36,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179839675] [2024-06-27 23:21:36,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:36,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:36,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 169 transitions, 1626 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 23:21:36,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:36,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:36,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:37,041 INFO L124 PetriNetUnfolderBase]: 378/753 cut-off events. [2024-06-27 23:21:37,042 INFO L125 PetriNetUnfolderBase]: For 47663/47663 co-relation queries the response was YES. [2024-06-27 23:21:37,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4654 conditions, 753 events. 378/753 cut-off events. For 47663/47663 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4040 event pairs, 64 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 4553. Up to 627 conditions per place. [2024-06-27 23:21:37,047 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 137 selfloop transitions, 39 changer transitions 0/179 dead transitions. [2024-06-27 23:21:37,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 179 transitions, 2038 flow [2024-06-27 23:21:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:21:37,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:21:37,048 INFO L175 Difference]: Start difference. First operand has 214 places, 169 transitions, 1626 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:21:37,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 179 transitions, 2038 flow [2024-06-27 23:21:37,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 179 transitions, 1956 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:37,134 INFO L231 Difference]: Finished difference. Result has 215 places, 170 transitions, 1668 flow [2024-06-27 23:21:37,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=215, PETRI_TRANSITIONS=170} [2024-06-27 23:21:37,134 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-27 23:21:37,134 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 170 transitions, 1668 flow [2024-06-27 23:21:37,134 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 23:21:37,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:37,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:21:37,135 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 23:21:37,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash -24175638, now seen corresponding path program 15 times [2024-06-27 23:21:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129860373] [2024-06-27 23:21:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:38,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129860373] [2024-06-27 23:21:38,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129860373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:38,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:38,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610454453] [2024-06-27 23:21:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:39,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:39,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 170 transitions, 1668 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 23:21:39,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:39,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:39,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:39,312 INFO L124 PetriNetUnfolderBase]: 382/761 cut-off events. [2024-06-27 23:21:39,312 INFO L125 PetriNetUnfolderBase]: For 49278/49278 co-relation queries the response was YES. [2024-06-27 23:21:39,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 761 events. 382/761 cut-off events. For 49278/49278 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4096 event pairs, 64 based on Foata normal form. 2/763 useless extension candidates. Maximal degree in co-relation 4635. Up to 641 conditions per place. [2024-06-27 23:21:39,318 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 141 selfloop transitions, 36 changer transitions 0/180 dead transitions. [2024-06-27 23:21:39,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 180 transitions, 2084 flow [2024-06-27 23:21:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:21:39,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:21:39,319 INFO L175 Difference]: Start difference. First operand has 215 places, 170 transitions, 1668 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:21:39,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 180 transitions, 2084 flow [2024-06-27 23:21:39,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 180 transitions, 1970 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:39,410 INFO L231 Difference]: Finished difference. Result has 217 places, 171 transitions, 1674 flow [2024-06-27 23:21:39,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1674, PETRI_PLACES=217, PETRI_TRANSITIONS=171} [2024-06-27 23:21:39,411 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 23:21:39,411 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 171 transitions, 1674 flow [2024-06-27 23:21:39,411 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 23:21:39,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:39,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:21:39,411 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 23:21:39,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1543812200, now seen corresponding path program 16 times [2024-06-27 23:21:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:39,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838233700] [2024-06-27 23:21:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:39,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838233700] [2024-06-27 23:21:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838233700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:41,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039808997] [2024-06-27 23:21:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:41,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:41,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:41,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 171 transitions, 1674 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 23:21:41,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:41,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:41,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:41,709 INFO L124 PetriNetUnfolderBase]: 386/769 cut-off events. [2024-06-27 23:21:41,709 INFO L125 PetriNetUnfolderBase]: For 50744/50744 co-relation queries the response was YES. [2024-06-27 23:21:41,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 769 events. 386/769 cut-off events. For 50744/50744 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4132 event pairs, 66 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 4682. Up to 607 conditions per place. [2024-06-27 23:21:41,715 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 120 selfloop transitions, 58 changer transitions 0/181 dead transitions. [2024-06-27 23:21:41,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 181 transitions, 2094 flow [2024-06-27 23:21:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:21:41,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:21:41,716 INFO L175 Difference]: Start difference. First operand has 217 places, 171 transitions, 1674 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:21:41,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 181 transitions, 2094 flow [2024-06-27 23:21:41,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 181 transitions, 1984 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:41,803 INFO L231 Difference]: Finished difference. Result has 219 places, 172 transitions, 1730 flow [2024-06-27 23:21:41,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1730, PETRI_PLACES=219, PETRI_TRANSITIONS=172} [2024-06-27 23:21:41,804 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 23:21:41,804 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 172 transitions, 1730 flow [2024-06-27 23:21:41,804 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 23:21:41,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:41,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:21:41,804 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 23:21:41,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1799869324, now seen corresponding path program 17 times [2024-06-27 23:21:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440144265] [2024-06-27 23:21:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440144265] [2024-06-27 23:21:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440144265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:21:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260388349] [2024-06-27 23:21:43,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:21:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:21:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:21:43,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:21:43,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 172 transitions, 1730 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:43,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:43,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:21:43,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:43,850 INFO L124 PetriNetUnfolderBase]: 383/760 cut-off events. [2024-06-27 23:21:43,850 INFO L125 PetriNetUnfolderBase]: For 46754/46754 co-relation queries the response was YES. [2024-06-27 23:21:43,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 760 events. 383/760 cut-off events. For 46754/46754 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4084 event pairs, 61 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 4477. Up to 639 conditions per place. [2024-06-27 23:21:43,855 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 144 selfloop transitions, 35 changer transitions 0/182 dead transitions. [2024-06-27 23:21:43,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 182 transitions, 2110 flow [2024-06-27 23:21:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:21:43,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:21:43,856 INFO L175 Difference]: Start difference. First operand has 219 places, 172 transitions, 1730 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:21:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 182 transitions, 2110 flow [2024-06-27 23:21:43,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 182 transitions, 1954 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:21:43,952 INFO L231 Difference]: Finished difference. Result has 222 places, 172 transitions, 1648 flow [2024-06-27 23:21:43,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1648, PETRI_PLACES=222, PETRI_TRANSITIONS=172} [2024-06-27 23:21:43,952 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-27 23:21:43,952 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 172 transitions, 1648 flow [2024-06-27 23:21:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:43,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:43,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:21:43,953 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 23:21:43,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash -18605496, now seen corresponding path program 4 times [2024-06-27 23:21:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124357730] [2024-06-27 23:21:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:46,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:46,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124357730] [2024-06-27 23:21:46,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124357730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:46,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:46,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:46,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653247107] [2024-06-27 23:21:46,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:46,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:46,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:46,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:46,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 172 transitions, 1648 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:46,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:46,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:46,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:46,742 INFO L124 PetriNetUnfolderBase]: 386/769 cut-off events. [2024-06-27 23:21:46,742 INFO L125 PetriNetUnfolderBase]: For 44205/44205 co-relation queries the response was YES. [2024-06-27 23:21:46,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4523 conditions, 769 events. 386/769 cut-off events. For 44205/44205 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4145 event pairs, 65 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 4418. Up to 622 conditions per place. [2024-06-27 23:21:46,748 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 46 changer transitions 0/184 dead transitions. [2024-06-27 23:21:46,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 184 transitions, 2218 flow [2024-06-27 23:21:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:21:46,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-27 23:21:46,749 INFO L175 Difference]: Start difference. First operand has 222 places, 172 transitions, 1648 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:21:46,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 184 transitions, 2218 flow [2024-06-27 23:21:46,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 184 transitions, 2055 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:21:46,837 INFO L231 Difference]: Finished difference. Result has 223 places, 174 transitions, 1624 flow [2024-06-27 23:21:46,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1624, PETRI_PLACES=223, PETRI_TRANSITIONS=174} [2024-06-27 23:21:46,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-27 23:21:46,838 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 174 transitions, 1624 flow [2024-06-27 23:21:46,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:46,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:46,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:46,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:21:46,838 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 23:21:46,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1543806248, now seen corresponding path program 5 times [2024-06-27 23:21:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807434991] [2024-06-27 23:21:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807434991] [2024-06-27 23:21:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807434991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:49,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719799747] [2024-06-27 23:21:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:49,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:49,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:49,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 174 transitions, 1624 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:49,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:49,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:49,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:50,255 INFO L124 PetriNetUnfolderBase]: 389/774 cut-off events. [2024-06-27 23:21:50,255 INFO L125 PetriNetUnfolderBase]: For 44622/44622 co-relation queries the response was YES. [2024-06-27 23:21:50,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 774 events. 389/774 cut-off events. For 44622/44622 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4183 event pairs, 65 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 4368. Up to 502 conditions per place. [2024-06-27 23:21:50,261 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 86 changer transitions 0/187 dead transitions. [2024-06-27 23:21:50,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 187 transitions, 2352 flow [2024-06-27 23:21:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:21:50,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-27 23:21:50,262 INFO L175 Difference]: Start difference. First operand has 223 places, 174 transitions, 1624 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:21:50,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 187 transitions, 2352 flow [2024-06-27 23:21:50,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 187 transitions, 2182 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 23:21:50,352 INFO L231 Difference]: Finished difference. Result has 223 places, 176 transitions, 1675 flow [2024-06-27 23:21:50,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1675, PETRI_PLACES=223, PETRI_TRANSITIONS=176} [2024-06-27 23:21:50,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-06-27 23:21:50,352 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 176 transitions, 1675 flow [2024-06-27 23:21:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:50,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:50,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:21:50,353 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 23:21:50,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1543596719, now seen corresponding path program 2 times [2024-06-27 23:21:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:50,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862593106] [2024-06-27 23:21:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:50,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:52,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862593106] [2024-06-27 23:21:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862593106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:52,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341771615] [2024-06-27 23:21:52,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:52,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:52,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:52,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 176 transitions, 1675 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:52,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:52,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:53,139 INFO L124 PetriNetUnfolderBase]: 393/778 cut-off events. [2024-06-27 23:21:53,139 INFO L125 PetriNetUnfolderBase]: For 49205/49205 co-relation queries the response was YES. [2024-06-27 23:21:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 778 events. 393/778 cut-off events. For 49205/49205 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4217 event pairs, 63 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 4415. Up to 623 conditions per place. [2024-06-27 23:21:53,144 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 136 selfloop transitions, 48 changer transitions 0/187 dead transitions. [2024-06-27 23:21:53,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 187 transitions, 2099 flow [2024-06-27 23:21:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:21:53,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:21:53,145 INFO L175 Difference]: Start difference. First operand has 223 places, 176 transitions, 1675 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:21:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 187 transitions, 2099 flow [2024-06-27 23:21:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 187 transitions, 1895 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:53,239 INFO L231 Difference]: Finished difference. Result has 225 places, 177 transitions, 1607 flow [2024-06-27 23:21:53,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1607, PETRI_PLACES=225, PETRI_TRANSITIONS=177} [2024-06-27 23:21:53,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 196 predicate places. [2024-06-27 23:21:53,239 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 177 transitions, 1607 flow [2024-06-27 23:21:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:53,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:53,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:53,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:21:53,240 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 23:21:53,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash -18597777, now seen corresponding path program 3 times [2024-06-27 23:21:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812693416] [2024-06-27 23:21:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812693416] [2024-06-27 23:21:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812693416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:55,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:55,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:21:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877004652] [2024-06-27 23:21:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:21:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:21:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:21:55,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:21:55,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 177 transitions, 1607 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:55,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:55,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:21:55,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:55,766 INFO L124 PetriNetUnfolderBase]: 397/790 cut-off events. [2024-06-27 23:21:55,766 INFO L125 PetriNetUnfolderBase]: For 50265/50265 co-relation queries the response was YES. [2024-06-27 23:21:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4516 conditions, 790 events. 397/790 cut-off events. For 50265/50265 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4295 event pairs, 65 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 4410. Up to 673 conditions per place. [2024-06-27 23:21:55,792 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 152 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2024-06-27 23:21:55,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 188 transitions, 2035 flow [2024-06-27 23:21:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:21:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:21:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:21:55,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-27 23:21:55,793 INFO L175 Difference]: Start difference. First operand has 225 places, 177 transitions, 1607 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:21:55,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 188 transitions, 2035 flow [2024-06-27 23:21:55,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 188 transitions, 1909 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:55,894 INFO L231 Difference]: Finished difference. Result has 227 places, 178 transitions, 1589 flow [2024-06-27 23:21:55,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1589, PETRI_PLACES=227, PETRI_TRANSITIONS=178} [2024-06-27 23:21:55,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2024-06-27 23:21:55,895 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 178 transitions, 1589 flow [2024-06-27 23:21:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:55,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:55,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:21:55,895 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 23:21:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -24169686, now seen corresponding path program 6 times [2024-06-27 23:21:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951446456] [2024-06-27 23:21:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:21:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:21:58,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:21:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951446456] [2024-06-27 23:21:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951446456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:21:58,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:21:58,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:21:58,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856692902] [2024-06-27 23:21:58,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:21:58,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:21:58,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:21:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:21:58,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:21:58,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:21:58,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 178 transitions, 1589 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:58,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:21:58,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:21:58,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:21:58,658 INFO L124 PetriNetUnfolderBase]: 400/795 cut-off events. [2024-06-27 23:21:58,659 INFO L125 PetriNetUnfolderBase]: For 48358/48358 co-relation queries the response was YES. [2024-06-27 23:21:58,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 795 events. 400/795 cut-off events. For 48358/48358 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4334 event pairs, 65 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 4387. Up to 675 conditions per place. [2024-06-27 23:21:58,683 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 150 selfloop transitions, 35 changer transitions 0/189 dead transitions. [2024-06-27 23:21:58,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 189 transitions, 2021 flow [2024-06-27 23:21:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:21:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:21:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:21:58,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2024-06-27 23:21:58,684 INFO L175 Difference]: Start difference. First operand has 227 places, 178 transitions, 1589 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:21:58,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 189 transitions, 2021 flow [2024-06-27 23:21:58,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 189 transitions, 1923 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:21:58,792 INFO L231 Difference]: Finished difference. Result has 228 places, 180 transitions, 1612 flow [2024-06-27 23:21:58,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1612, PETRI_PLACES=228, PETRI_TRANSITIONS=180} [2024-06-27 23:21:58,793 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2024-06-27 23:21:58,793 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 180 transitions, 1612 flow [2024-06-27 23:21:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:21:58,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:21:58,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:21:58,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:21:58,793 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 23:21:58,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:21:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1543604438, now seen corresponding path program 7 times [2024-06-27 23:21:58,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:21:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154587155] [2024-06-27 23:21:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:21:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:21:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:01,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:01,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154587155] [2024-06-27 23:22:01,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154587155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:01,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:01,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:22:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172730434] [2024-06-27 23:22:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:01,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:22:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:22:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:22:01,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:22:01,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 180 transitions, 1612 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:01,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:01,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:22:01,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:02,352 INFO L124 PetriNetUnfolderBase]: 398/792 cut-off events. [2024-06-27 23:22:02,352 INFO L125 PetriNetUnfolderBase]: For 46083/46083 co-relation queries the response was YES. [2024-06-27 23:22:02,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4353 conditions, 792 events. 398/792 cut-off events. For 46083/46083 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4305 event pairs, 65 based on Foata normal form. 1/793 useless extension candidates. Maximal degree in co-relation 4247. Up to 520 conditions per place. [2024-06-27 23:22:02,358 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 105 selfloop transitions, 82 changer transitions 0/191 dead transitions. [2024-06-27 23:22:02,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 191 transitions, 2318 flow [2024-06-27 23:22:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 23:22:02,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2024-06-27 23:22:02,360 INFO L175 Difference]: Start difference. First operand has 228 places, 180 transitions, 1612 flow. Second operand 9 states and 139 transitions. [2024-06-27 23:22:02,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 191 transitions, 2318 flow [2024-06-27 23:22:02,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 191 transitions, 2189 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 23:22:02,476 INFO L231 Difference]: Finished difference. Result has 230 places, 180 transitions, 1652 flow [2024-06-27 23:22:02,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1652, PETRI_PLACES=230, PETRI_TRANSITIONS=180} [2024-06-27 23:22:02,476 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 201 predicate places. [2024-06-27 23:22:02,476 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 180 transitions, 1652 flow [2024-06-27 23:22:02,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:02,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:02,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:02,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:22:02,477 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 23:22:02,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:02,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1531328557, now seen corresponding path program 4 times [2024-06-27 23:22:02,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:02,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721944041] [2024-06-27 23:22:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:02,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:05,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:05,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721944041] [2024-06-27 23:22:05,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721944041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:05,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:05,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:05,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962982789] [2024-06-27 23:22:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:05,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:05,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:05,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:05,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 180 transitions, 1652 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:05,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:05,890 INFO L124 PetriNetUnfolderBase]: 402/799 cut-off events. [2024-06-27 23:22:05,890 INFO L125 PetriNetUnfolderBase]: For 50709/50709 co-relation queries the response was YES. [2024-06-27 23:22:05,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 799 events. 402/799 cut-off events. For 50709/50709 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4373 event pairs, 128 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 4398. Up to 719 conditions per place. [2024-06-27 23:22:05,896 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 21 changer transitions 0/192 dead transitions. [2024-06-27 23:22:05,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 192 transitions, 2092 flow [2024-06-27 23:22:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:22:05,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:22:05,897 INFO L175 Difference]: Start difference. First operand has 230 places, 180 transitions, 1652 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:22:05,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 192 transitions, 2092 flow [2024-06-27 23:22:06,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 192 transitions, 1900 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:06,004 INFO L231 Difference]: Finished difference. Result has 232 places, 181 transitions, 1546 flow [2024-06-27 23:22:06,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1546, PETRI_PLACES=232, PETRI_TRANSITIONS=181} [2024-06-27 23:22:06,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-27 23:22:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 181 transitions, 1546 flow [2024-06-27 23:22:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:06,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:06,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:22:06,005 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 23:22:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1099770014, now seen corresponding path program 8 times [2024-06-27 23:22:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863394674] [2024-06-27 23:22:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:08,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:08,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863394674] [2024-06-27 23:22:08,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863394674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:08,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:08,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:22:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175676987] [2024-06-27 23:22:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:22:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:22:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:22:08,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:22:08,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 181 transitions, 1546 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:08,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:08,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:22:08,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:09,052 INFO L124 PetriNetUnfolderBase]: 400/797 cut-off events. [2024-06-27 23:22:09,052 INFO L125 PetriNetUnfolderBase]: For 45411/45411 co-relation queries the response was YES. [2024-06-27 23:22:09,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4274 conditions, 797 events. 400/797 cut-off events. For 45411/45411 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4356 event pairs, 67 based on Foata normal form. 1/798 useless extension candidates. Maximal degree in co-relation 4165. Up to 650 conditions per place. [2024-06-27 23:22:09,058 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 47 changer transitions 0/190 dead transitions. [2024-06-27 23:22:09,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 190 transitions, 1938 flow [2024-06-27 23:22:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:09,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:22:09,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-27 23:22:09,059 INFO L175 Difference]: Start difference. First operand has 232 places, 181 transitions, 1546 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:22:09,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 190 transitions, 1938 flow [2024-06-27 23:22:09,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 190 transitions, 1834 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:09,182 INFO L231 Difference]: Finished difference. Result has 232 places, 181 transitions, 1541 flow [2024-06-27 23:22:09,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1541, PETRI_PLACES=232, PETRI_TRANSITIONS=181} [2024-06-27 23:22:09,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-27 23:22:09,183 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 181 transitions, 1541 flow [2024-06-27 23:22:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:09,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:09,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:22:09,183 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 23:22:09,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:09,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1277573009, now seen corresponding path program 5 times [2024-06-27 23:22:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758397223] [2024-06-27 23:22:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:11,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758397223] [2024-06-27 23:22:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758397223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:11,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:11,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258343938] [2024-06-27 23:22:11,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:11,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:11,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 181 transitions, 1541 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:11,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:11,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:11,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:11,953 INFO L124 PetriNetUnfolderBase]: 404/802 cut-off events. [2024-06-27 23:22:11,953 INFO L125 PetriNetUnfolderBase]: For 50023/50023 co-relation queries the response was YES. [2024-06-27 23:22:11,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 802 events. 404/802 cut-off events. For 50023/50023 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4398 event pairs, 126 based on Foata normal form. 2/804 useless extension candidates. Maximal degree in co-relation 4230. Up to 701 conditions per place. [2024-06-27 23:22:11,959 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 169 selfloop transitions, 23 changer transitions 0/195 dead transitions. [2024-06-27 23:22:11,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 195 transitions, 2153 flow [2024-06-27 23:22:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:22:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:22:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:22:11,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-27 23:22:11,961 INFO L175 Difference]: Start difference. First operand has 232 places, 181 transitions, 1541 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:22:11,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 195 transitions, 2153 flow [2024-06-27 23:22:12,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 195 transitions, 1996 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:12,076 INFO L231 Difference]: Finished difference. Result has 234 places, 182 transitions, 1474 flow [2024-06-27 23:22:12,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1474, PETRI_PLACES=234, PETRI_TRANSITIONS=182} [2024-06-27 23:22:12,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:22:12,076 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 182 transitions, 1474 flow [2024-06-27 23:22:12,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:12,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:12,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:22:12,077 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 23:22:12,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1287096209, now seen corresponding path program 6 times [2024-06-27 23:22:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38026618] [2024-06-27 23:22:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:14,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38026618] [2024-06-27 23:22:14,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38026618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:14,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:14,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637199276] [2024-06-27 23:22:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:14,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:14,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:14,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 182 transitions, 1474 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:14,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:14,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:14,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:15,021 INFO L124 PetriNetUnfolderBase]: 401/799 cut-off events. [2024-06-27 23:22:15,022 INFO L125 PetriNetUnfolderBase]: For 44210/44210 co-relation queries the response was YES. [2024-06-27 23:22:15,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 799 events. 401/799 cut-off events. For 44210/44210 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4398 event pairs, 127 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 3930. Up to 725 conditions per place. [2024-06-27 23:22:15,027 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 172 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2024-06-27 23:22:15,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 192 transitions, 1874 flow [2024-06-27 23:22:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:22:15,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:22:15,028 INFO L175 Difference]: Start difference. First operand has 234 places, 182 transitions, 1474 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:22:15,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 192 transitions, 1874 flow [2024-06-27 23:22:15,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 192 transitions, 1716 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:15,140 INFO L231 Difference]: Finished difference. Result has 234 places, 182 transitions, 1354 flow [2024-06-27 23:22:15,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1354, PETRI_PLACES=234, PETRI_TRANSITIONS=182} [2024-06-27 23:22:15,140 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:22:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 182 transitions, 1354 flow [2024-06-27 23:22:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:15,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:15,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:22:15,140 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 23:22:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1926900660, now seen corresponding path program 9 times [2024-06-27 23:22:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926839666] [2024-06-27 23:22:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926839666] [2024-06-27 23:22:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926839666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:17,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:17,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:17,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241167022] [2024-06-27 23:22:17,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:17,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:17,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:17,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:17,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 182 transitions, 1354 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:17,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:17,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:17,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:17,968 INFO L124 PetriNetUnfolderBase]: 399/796 cut-off events. [2024-06-27 23:22:17,968 INFO L125 PetriNetUnfolderBase]: For 37041/37041 co-relation queries the response was YES. [2024-06-27 23:22:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 796 events. 399/796 cut-off events. For 37041/37041 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4361 event pairs, 127 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 3617. Up to 711 conditions per place. [2024-06-27 23:22:17,973 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 165 selfloop transitions, 23 changer transitions 0/191 dead transitions. [2024-06-27 23:22:17,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 191 transitions, 1750 flow [2024-06-27 23:22:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:22:17,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 23:22:17,974 INFO L175 Difference]: Start difference. First operand has 234 places, 182 transitions, 1354 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:22:17,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 191 transitions, 1750 flow [2024-06-27 23:22:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 191 transitions, 1680 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:18,075 INFO L231 Difference]: Finished difference. Result has 235 places, 182 transitions, 1335 flow [2024-06-27 23:22:18,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1335, PETRI_PLACES=235, PETRI_TRANSITIONS=182} [2024-06-27 23:22:18,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-27 23:22:18,076 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 182 transitions, 1335 flow [2024-06-27 23:22:18,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:18,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:18,076 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 23:22:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:22:18,076 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 23:22:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 549134949, now seen corresponding path program 1 times [2024-06-27 23:22:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471562219] [2024-06-27 23:22:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471562219] [2024-06-27 23:22:19,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471562219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377710348] [2024-06-27 23:22:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:19,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:19,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 182 transitions, 1335 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:19,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:19,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:19,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:20,051 INFO L124 PetriNetUnfolderBase]: 415/833 cut-off events. [2024-06-27 23:22:20,052 INFO L125 PetriNetUnfolderBase]: For 60944/60944 co-relation queries the response was YES. [2024-06-27 23:22:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 833 events. 415/833 cut-off events. For 60944/60944 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4591 event pairs, 61 based on Foata normal form. 8/841 useless extension candidates. Maximal degree in co-relation 3742. Up to 607 conditions per place. [2024-06-27 23:22:20,057 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 158 selfloop transitions, 13 changer transitions 29/203 dead transitions. [2024-06-27 23:22:20,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 203 transitions, 1814 flow [2024-06-27 23:22:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:22:20,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:22:20,057 INFO L175 Difference]: Start difference. First operand has 235 places, 182 transitions, 1335 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:22:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 203 transitions, 1814 flow [2024-06-27 23:22:20,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 203 transitions, 1748 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:20,184 INFO L231 Difference]: Finished difference. Result has 235 places, 167 transitions, 1181 flow [2024-06-27 23:22:20,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1181, PETRI_PLACES=235, PETRI_TRANSITIONS=167} [2024-06-27 23:22:20,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-27 23:22:20,185 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 167 transitions, 1181 flow [2024-06-27 23:22:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:20,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:20,185 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 23:22:20,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:22:20,185 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 23:22:20,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -548788821, now seen corresponding path program 2 times [2024-06-27 23:22:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877975754] [2024-06-27 23:22:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877975754] [2024-06-27 23:22:22,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877975754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:22,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:22,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:22,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180450305] [2024-06-27 23:22:22,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:22,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:22,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:22,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:22,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 167 transitions, 1181 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:22,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:22,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:22,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:22,845 INFO L124 PetriNetUnfolderBase]: 346/694 cut-off events. [2024-06-27 23:22:22,845 INFO L125 PetriNetUnfolderBase]: For 42760/42760 co-relation queries the response was YES. [2024-06-27 23:22:22,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 694 events. 346/694 cut-off events. For 42760/42760 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3669 event pairs, 50 based on Foata normal form. 2/696 useless extension candidates. Maximal degree in co-relation 3250. Up to 584 conditions per place. [2024-06-27 23:22:22,850 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 151 selfloop transitions, 27 changer transitions 1/182 dead transitions. [2024-06-27 23:22:22,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 182 transitions, 1597 flow [2024-06-27 23:22:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:22:22,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 23:22:22,851 INFO L175 Difference]: Start difference. First operand has 235 places, 167 transitions, 1181 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:22:22,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 182 transitions, 1597 flow [2024-06-27 23:22:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 182 transitions, 1528 flow, removed 7 selfloop flow, removed 19 redundant places. [2024-06-27 23:22:22,928 INFO L231 Difference]: Finished difference. Result has 215 places, 169 transitions, 1213 flow [2024-06-27 23:22:22,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1213, PETRI_PLACES=215, PETRI_TRANSITIONS=169} [2024-06-27 23:22:22,928 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2024-06-27 23:22:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 169 transitions, 1213 flow [2024-06-27 23:22:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:22,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:22,929 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 23:22:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:22:22,929 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 23:22:22,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash 133526139, now seen corresponding path program 3 times [2024-06-27 23:22:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141078602] [2024-06-27 23:22:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:22,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:25,041 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 23:22:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141078602] [2024-06-27 23:22:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141078602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:25,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34230087] [2024-06-27 23:22:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:25,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:22:25,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 169 transitions, 1213 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:25,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:25,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:22:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:25,519 INFO L124 PetriNetUnfolderBase]: 339/677 cut-off events. [2024-06-27 23:22:25,519 INFO L125 PetriNetUnfolderBase]: For 38454/38454 co-relation queries the response was YES. [2024-06-27 23:22:25,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 677 events. 339/677 cut-off events. For 38454/38454 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3565 event pairs, 39 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3162. Up to 533 conditions per place. [2024-06-27 23:22:25,524 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 152 selfloop transitions, 28 changer transitions 0/183 dead transitions. [2024-06-27 23:22:25,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 183 transitions, 1619 flow [2024-06-27 23:22:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:22:25,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:22:25,524 INFO L175 Difference]: Start difference. First operand has 215 places, 169 transitions, 1213 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:22:25,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 183 transitions, 1619 flow [2024-06-27 23:22:25,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 183 transitions, 1560 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:22:25,591 INFO L231 Difference]: Finished difference. Result has 219 places, 170 transitions, 1234 flow [2024-06-27 23:22:25,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1234, PETRI_PLACES=219, PETRI_TRANSITIONS=170} [2024-06-27 23:22:25,591 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 23:22:25,591 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 170 transitions, 1234 flow [2024-06-27 23:22:25,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:25,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:25,592 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 23:22:25,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:22:25,592 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 23:22:25,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1687343047, now seen corresponding path program 4 times [2024-06-27 23:22:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340996854] [2024-06-27 23:22:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340996854] [2024-06-27 23:22:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340996854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:22:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024142614] [2024-06-27 23:22:27,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:27,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:22:27,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:27,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:22:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:22:27,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:27,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 170 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:27,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:27,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:27,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:27,958 INFO L124 PetriNetUnfolderBase]: 351/705 cut-off events. [2024-06-27 23:22:27,959 INFO L125 PetriNetUnfolderBase]: For 58366/58366 co-relation queries the response was YES. [2024-06-27 23:22:27,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3366 conditions, 705 events. 351/705 cut-off events. For 58366/58366 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3722 event pairs, 40 based on Foata normal form. 8/713 useless extension candidates. Maximal degree in co-relation 3272. Up to 543 conditions per place. [2024-06-27 23:22:27,963 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 152 selfloop transitions, 15 changer transitions 17/187 dead transitions. [2024-06-27 23:22:27,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 187 transitions, 1664 flow [2024-06-27 23:22:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:22:27,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:22:27,964 INFO L175 Difference]: Start difference. First operand has 219 places, 170 transitions, 1234 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:22:27,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 187 transitions, 1664 flow [2024-06-27 23:22:28,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 187 transitions, 1597 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:28,062 INFO L231 Difference]: Finished difference. Result has 220 places, 162 transitions, 1156 flow [2024-06-27 23:22:28,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=220, PETRI_TRANSITIONS=162} [2024-06-27 23:22:28,062 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 23:22:28,062 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 162 transitions, 1156 flow [2024-06-27 23:22:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:28,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:28,062 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 23:22:28,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:22:28,062 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 23:22:28,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1736660033, now seen corresponding path program 5 times [2024-06-27 23:22:28,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:28,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858367145] [2024-06-27 23:22:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:28,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:30,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858367145] [2024-06-27 23:22:30,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858367145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:30,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:30,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985041283] [2024-06-27 23:22:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:30,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:30,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:30,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:30,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:30,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:30,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 162 transitions, 1156 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:30,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:30,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:30,914 INFO L124 PetriNetUnfolderBase]: 325/658 cut-off events. [2024-06-27 23:22:30,914 INFO L125 PetriNetUnfolderBase]: For 59644/59644 co-relation queries the response was YES. [2024-06-27 23:22:30,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 658 events. 325/658 cut-off events. For 59644/59644 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3383 event pairs, 37 based on Foata normal form. 8/666 useless extension candidates. Maximal degree in co-relation 3080. Up to 518 conditions per place. [2024-06-27 23:22:30,920 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 140 selfloop transitions, 23 changer transitions 9/175 dead transitions. [2024-06-27 23:22:30,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 175 transitions, 1552 flow [2024-06-27 23:22:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:22:30,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-27 23:22:30,920 INFO L175 Difference]: Start difference. First operand has 220 places, 162 transitions, 1156 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:22:30,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 175 transitions, 1552 flow [2024-06-27 23:22:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 175 transitions, 1494 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:31,011 INFO L231 Difference]: Finished difference. Result has 211 places, 159 transitions, 1131 flow [2024-06-27 23:22:31,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1131, PETRI_PLACES=211, PETRI_TRANSITIONS=159} [2024-06-27 23:22:31,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-27 23:22:31,012 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 159 transitions, 1131 flow [2024-06-27 23:22:31,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:31,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:31,012 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 23:22:31,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:22:31,012 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 23:22:31,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1762070665, now seen corresponding path program 6 times [2024-06-27 23:22:31,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:31,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375894770] [2024-06-27 23:22:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:31,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:33,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375894770] [2024-06-27 23:22:33,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375894770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:33,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882006429] [2024-06-27 23:22:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:33,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:33,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:33,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:33,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:33,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 159 transitions, 1131 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:33,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:33,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:33,538 INFO L124 PetriNetUnfolderBase]: 320/651 cut-off events. [2024-06-27 23:22:33,538 INFO L125 PetriNetUnfolderBase]: For 53924/53924 co-relation queries the response was YES. [2024-06-27 23:22:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 651 events. 320/651 cut-off events. For 53924/53924 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3353 event pairs, 29 based on Foata normal form. 8/659 useless extension candidates. Maximal degree in co-relation 2993. Up to 498 conditions per place. [2024-06-27 23:22:33,543 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 137 selfloop transitions, 19 changer transitions 14/173 dead transitions. [2024-06-27 23:22:33,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 173 transitions, 1525 flow [2024-06-27 23:22:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:22:33,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-27 23:22:33,543 INFO L175 Difference]: Start difference. First operand has 211 places, 159 transitions, 1131 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:22:33,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 173 transitions, 1525 flow [2024-06-27 23:22:33,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 173 transitions, 1477 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:33,628 INFO L231 Difference]: Finished difference. Result has 210 places, 153 transitions, 1095 flow [2024-06-27 23:22:33,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1095, PETRI_PLACES=210, PETRI_TRANSITIONS=153} [2024-06-27 23:22:33,629 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 181 predicate places. [2024-06-27 23:22:33,629 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 153 transitions, 1095 flow [2024-06-27 23:22:33,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:33,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:33,629 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 23:22:33,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:22:33,629 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 23:22:33,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1909149923, now seen corresponding path program 7 times [2024-06-27 23:22:33,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:33,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400508999] [2024-06-27 23:22:33,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:33,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400508999] [2024-06-27 23:22:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400508999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:35,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:35,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684030840] [2024-06-27 23:22:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:35,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:35,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:35,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 153 transitions, 1095 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:35,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:35,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:35,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:36,431 INFO L124 PetriNetUnfolderBase]: 310/633 cut-off events. [2024-06-27 23:22:36,431 INFO L125 PetriNetUnfolderBase]: For 60056/60056 co-relation queries the response was YES. [2024-06-27 23:22:36,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 633 events. 310/633 cut-off events. For 60056/60056 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3238 event pairs, 35 based on Foata normal form. 10/643 useless extension candidates. Maximal degree in co-relation 2977. Up to 443 conditions per place. [2024-06-27 23:22:36,435 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 40 changer transitions 6/167 dead transitions. [2024-06-27 23:22:36,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 167 transitions, 1503 flow [2024-06-27 23:22:36,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:22:36,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:22:36,436 INFO L175 Difference]: Start difference. First operand has 210 places, 153 transitions, 1095 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:22:36,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 167 transitions, 1503 flow [2024-06-27 23:22:36,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 167 transitions, 1455 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:36,512 INFO L231 Difference]: Finished difference. Result has 202 places, 151 transitions, 1135 flow [2024-06-27 23:22:36,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1135, PETRI_PLACES=202, PETRI_TRANSITIONS=151} [2024-06-27 23:22:36,512 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 23:22:36,512 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 151 transitions, 1135 flow [2024-06-27 23:22:36,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:36,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:36,513 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 23:22:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:22:36,513 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 23:22:36,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1731898433, now seen corresponding path program 8 times [2024-06-27 23:22:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:36,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974199764] [2024-06-27 23:22:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:36,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974199764] [2024-06-27 23:22:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974199764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:38,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:38,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:22:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950720951] [2024-06-27 23:22:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:22:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:22:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:22:38,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:22:38,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 151 transitions, 1135 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:38,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:38,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:22:38,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:38,436 INFO L124 PetriNetUnfolderBase]: 305/624 cut-off events. [2024-06-27 23:22:38,436 INFO L125 PetriNetUnfolderBase]: For 48648/48648 co-relation queries the response was YES. [2024-06-27 23:22:38,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 624 events. 305/624 cut-off events. For 48648/48648 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3139 event pairs, 25 based on Foata normal form. 8/632 useless extension candidates. Maximal degree in co-relation 2946. Up to 463 conditions per place. [2024-06-27 23:22:38,440 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 130 selfloop transitions, 14 changer transitions 18/166 dead transitions. [2024-06-27 23:22:38,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 166 transitions, 1517 flow [2024-06-27 23:22:38,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:22:38,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 23:22:38,441 INFO L175 Difference]: Start difference. First operand has 202 places, 151 transitions, 1135 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:22:38,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 166 transitions, 1517 flow [2024-06-27 23:22:38,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 166 transitions, 1421 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:22:38,508 INFO L231 Difference]: Finished difference. Result has 201 places, 143 transitions, 1029 flow [2024-06-27 23:22:38,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1029, PETRI_PLACES=201, PETRI_TRANSITIONS=143} [2024-06-27 23:22:38,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 23:22:38,509 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 143 transitions, 1029 flow [2024-06-27 23:22:38,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:38,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:38,509 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 23:22:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:22:38,509 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:38,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2019617183, now seen corresponding path program 9 times [2024-06-27 23:22:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007214663] [2024-06-27 23:22:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:40,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:40,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007214663] [2024-06-27 23:22:40,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007214663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:40,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:40,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:40,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498297737] [2024-06-27 23:22:40,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:40,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:40,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:40,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:40,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 143 transitions, 1029 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:40,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:40,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:40,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:41,065 INFO L124 PetriNetUnfolderBase]: 275/558 cut-off events. [2024-06-27 23:22:41,065 INFO L125 PetriNetUnfolderBase]: For 33350/33350 co-relation queries the response was YES. [2024-06-27 23:22:41,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 558 events. 275/558 cut-off events. For 33350/33350 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2745 event pairs, 27 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 2684. Up to 415 conditions per place. [2024-06-27 23:22:41,070 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 36 changer transitions 0/154 dead transitions. [2024-06-27 23:22:41,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 154 transitions, 1373 flow [2024-06-27 23:22:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:22:41,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:22:41,071 INFO L175 Difference]: Start difference. First operand has 201 places, 143 transitions, 1029 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:22:41,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 154 transitions, 1373 flow [2024-06-27 23:22:41,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 154 transitions, 1327 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:41,138 INFO L231 Difference]: Finished difference. Result has 190 places, 144 transitions, 1081 flow [2024-06-27 23:22:41,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1081, PETRI_PLACES=190, PETRI_TRANSITIONS=144} [2024-06-27 23:22:41,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 23:22:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 144 transitions, 1081 flow [2024-06-27 23:22:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:41,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:41,139 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 23:22:41,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:22:41,139 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:41,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1223380585, now seen corresponding path program 10 times [2024-06-27 23:22:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:41,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555662558] [2024-06-27 23:22:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:41,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555662558] [2024-06-27 23:22:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555662558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:22:44,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622091262] [2024-06-27 23:22:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:22:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:22:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:22:44,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:22:44,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 144 transitions, 1081 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:44,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:44,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:22:44,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:45,156 INFO L124 PetriNetUnfolderBase]: 279/566 cut-off events. [2024-06-27 23:22:45,156 INFO L125 PetriNetUnfolderBase]: For 28466/28466 co-relation queries the response was YES. [2024-06-27 23:22:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 566 events. 279/566 cut-off events. For 28466/28466 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2789 event pairs, 25 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 2722. Up to 393 conditions per place. [2024-06-27 23:22:45,159 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 115 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-06-27 23:22:45,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 156 transitions, 1431 flow [2024-06-27 23:22:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:22:45,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:22:45,160 INFO L175 Difference]: Start difference. First operand has 190 places, 144 transitions, 1081 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:22:45,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 156 transitions, 1431 flow [2024-06-27 23:22:45,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1343 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:22:45,216 INFO L231 Difference]: Finished difference. Result has 191 places, 145 transitions, 1096 flow [2024-06-27 23:22:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=191, PETRI_TRANSITIONS=145} [2024-06-27 23:22:45,216 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:22:45,216 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 145 transitions, 1096 flow [2024-06-27 23:22:45,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:45,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:45,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:22:45,217 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:45,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1589157191, now seen corresponding path program 1 times [2024-06-27 23:22:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440053667] [2024-06-27 23:22:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440053667] [2024-06-27 23:22:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440053667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:47,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:47,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:22:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718270651] [2024-06-27 23:22:47,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:47,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:22:47,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:47,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:22:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:22:47,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:47,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 145 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:47,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:47,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:47,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:48,149 INFO L124 PetriNetUnfolderBase]: 309/632 cut-off events. [2024-06-27 23:22:48,149 INFO L125 PetriNetUnfolderBase]: For 57106/57106 co-relation queries the response was YES. [2024-06-27 23:22:48,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3618 conditions, 632 events. 309/632 cut-off events. For 57106/57106 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3211 event pairs, 37 based on Foata normal form. 6/638 useless extension candidates. Maximal degree in co-relation 3538. Up to 411 conditions per place. [2024-06-27 23:22:48,153 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 118 selfloop transitions, 35 changer transitions 7/163 dead transitions. [2024-06-27 23:22:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 163 transitions, 1644 flow [2024-06-27 23:22:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:22:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:22:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:22:48,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:22:48,154 INFO L175 Difference]: Start difference. First operand has 191 places, 145 transitions, 1096 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:22:48,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 163 transitions, 1644 flow [2024-06-27 23:22:48,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 163 transitions, 1553 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:22:48,253 INFO L231 Difference]: Finished difference. Result has 194 places, 142 transitions, 1058 flow [2024-06-27 23:22:48,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1058, PETRI_PLACES=194, PETRI_TRANSITIONS=142} [2024-06-27 23:22:48,254 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:22:48,254 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 142 transitions, 1058 flow [2024-06-27 23:22:48,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:48,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:48,254 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 23:22:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:22:48,255 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:48,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1595652311, now seen corresponding path program 2 times [2024-06-27 23:22:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:48,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238024231] [2024-06-27 23:22:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:51,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:51,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238024231] [2024-06-27 23:22:51,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238024231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:51,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:51,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:22:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859023294] [2024-06-27 23:22:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:51,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:22:51,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:22:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:22:51,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:51,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 142 transitions, 1058 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:51,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:51,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:51,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:52,434 INFO L124 PetriNetUnfolderBase]: 306/623 cut-off events. [2024-06-27 23:22:52,434 INFO L125 PetriNetUnfolderBase]: For 63314/63314 co-relation queries the response was YES. [2024-06-27 23:22:52,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 623 events. 306/623 cut-off events. For 63314/63314 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3139 event pairs, 41 based on Foata normal form. 8/631 useless extension candidates. Maximal degree in co-relation 3496. Up to 461 conditions per place. [2024-06-27 23:22:52,438 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 31 changer transitions 9/156 dead transitions. [2024-06-27 23:22:52,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 156 transitions, 1424 flow [2024-06-27 23:22:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:22:52,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:22:52,439 INFO L175 Difference]: Start difference. First operand has 194 places, 142 transitions, 1058 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:22:52,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 156 transitions, 1424 flow [2024-06-27 23:22:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 156 transitions, 1348 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:22:52,537 INFO L231 Difference]: Finished difference. Result has 191 places, 139 transitions, 1028 flow [2024-06-27 23:22:52,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1028, PETRI_PLACES=191, PETRI_TRANSITIONS=139} [2024-06-27 23:22:52,537 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:22:52,537 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 139 transitions, 1028 flow [2024-06-27 23:22:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:52,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:52,538 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 23:22:52,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:22:52,538 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:52,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1589396201, now seen corresponding path program 3 times [2024-06-27 23:22:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455888844] [2024-06-27 23:22:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:52,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:56,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455888844] [2024-06-27 23:22:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455888844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:56,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:56,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:22:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637007005] [2024-06-27 23:22:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:56,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:22:56,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:22:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:22:56,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:56,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 139 transitions, 1028 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:56,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:56,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:56,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:56,791 INFO L124 PetriNetUnfolderBase]: 279/570 cut-off events. [2024-06-27 23:22:56,791 INFO L125 PetriNetUnfolderBase]: For 42333/42333 co-relation queries the response was YES. [2024-06-27 23:22:56,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 570 events. 279/570 cut-off events. For 42333/42333 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2834 event pairs, 29 based on Foata normal form. 8/578 useless extension candidates. Maximal degree in co-relation 2701. Up to 411 conditions per place. [2024-06-27 23:22:56,795 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 110 selfloop transitions, 31 changer transitions 9/153 dead transitions. [2024-06-27 23:22:56,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 153 transitions, 1388 flow [2024-06-27 23:22:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:22:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:22:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:22:56,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:22:56,796 INFO L175 Difference]: Start difference. First operand has 191 places, 139 transitions, 1028 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:22:56,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 153 transitions, 1388 flow [2024-06-27 23:22:56,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 153 transitions, 1322 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:56,853 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1008 flow [2024-06-27 23:22:56,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1008, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-27 23:22:56,854 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:22:56,854 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1008 flow [2024-06-27 23:22:56,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:56,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:56,854 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 23:22:56,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:22:56,855 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:56,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash 100628259, now seen corresponding path program 11 times [2024-06-27 23:22:56,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:56,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005917958] [2024-06-27 23:22:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:56,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:58,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:58,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005917958] [2024-06-27 23:22:58,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005917958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:58,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:22:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712190704] [2024-06-27 23:22:58,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:22:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:58,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:22:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:22:59,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:22:59,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1008 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:59,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:59,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:22:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:59,259 INFO L124 PetriNetUnfolderBase]: 278/572 cut-off events. [2024-06-27 23:22:59,259 INFO L125 PetriNetUnfolderBase]: For 44379/44379 co-relation queries the response was YES. [2024-06-27 23:22:59,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 572 events. 278/572 cut-off events. For 44379/44379 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2871 event pairs, 39 based on Foata normal form. 10/582 useless extension candidates. Maximal degree in co-relation 2722. Up to 428 conditions per place. [2024-06-27 23:22:59,263 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 114 selfloop transitions, 19 changer transitions 12/148 dead transitions. [2024-06-27 23:22:59,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 148 transitions, 1374 flow [2024-06-27 23:22:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:22:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:22:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:22:59,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-27 23:22:59,264 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1008 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:22:59,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 148 transitions, 1374 flow [2024-06-27 23:22:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 148 transitions, 1308 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:22:59,323 INFO L231 Difference]: Finished difference. Result has 184 places, 131 transitions, 956 flow [2024-06-27 23:22:59,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=184, PETRI_TRANSITIONS=131} [2024-06-27 23:22:59,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:22:59,324 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 131 transitions, 956 flow [2024-06-27 23:22:59,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:59,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:59,324 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 23:22:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:22:59,324 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:22:59,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -749443791, now seen corresponding path program 12 times [2024-06-27 23:22:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:59,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875890029] [2024-06-27 23:22:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875890029] [2024-06-27 23:23:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875890029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:01,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:01,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:01,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210946854] [2024-06-27 23:23:01,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:01,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:01,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:01,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:01,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 131 transitions, 956 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:01,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:01,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:01,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:01,673 INFO L124 PetriNetUnfolderBase]: 258/532 cut-off events. [2024-06-27 23:23:01,673 INFO L125 PetriNetUnfolderBase]: For 26794/26794 co-relation queries the response was YES. [2024-06-27 23:23:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2604 conditions, 532 events. 258/532 cut-off events. For 26794/26794 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2621 event pairs, 31 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 2528. Up to 422 conditions per place. [2024-06-27 23:23:01,677 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 116 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-27 23:23:01,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 141 transitions, 1274 flow [2024-06-27 23:23:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:23:01,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:23:01,678 INFO L175 Difference]: Start difference. First operand has 184 places, 131 transitions, 956 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:23:01,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 141 transitions, 1274 flow [2024-06-27 23:23:01,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 141 transitions, 1230 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:01,724 INFO L231 Difference]: Finished difference. Result has 181 places, 132 transitions, 986 flow [2024-06-27 23:23:01,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=986, PETRI_PLACES=181, PETRI_TRANSITIONS=132} [2024-06-27 23:23:01,725 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-27 23:23:01,725 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 132 transitions, 986 flow [2024-06-27 23:23:01,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:01,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:01,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:01,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:23:01,725 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:01,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -613359327, now seen corresponding path program 13 times [2024-06-27 23:23:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213866790] [2024-06-27 23:23:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:04,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:04,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213866790] [2024-06-27 23:23:04,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213866790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:04,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40218428] [2024-06-27 23:23:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:04,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:04,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:04,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 132 transitions, 986 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:04,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:04,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:04,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:05,164 INFO L124 PetriNetUnfolderBase]: 262/540 cut-off events. [2024-06-27 23:23:05,164 INFO L125 PetriNetUnfolderBase]: For 25562/25562 co-relation queries the response was YES. [2024-06-27 23:23:05,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 540 events. 262/540 cut-off events. For 25562/25562 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2672 event pairs, 35 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 2591. Up to 314 conditions per place. [2024-06-27 23:23:05,168 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 73 selfloop transitions, 65 changer transitions 0/141 dead transitions. [2024-06-27 23:23:05,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 141 transitions, 1304 flow [2024-06-27 23:23:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:23:05,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:23:05,169 INFO L175 Difference]: Start difference. First operand has 181 places, 132 transitions, 986 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:23:05,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 141 transitions, 1304 flow [2024-06-27 23:23:05,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 141 transitions, 1240 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:05,223 INFO L231 Difference]: Finished difference. Result has 183 places, 133 transitions, 1084 flow [2024-06-27 23:23:05,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1084, PETRI_PLACES=183, PETRI_TRANSITIONS=133} [2024-06-27 23:23:05,224 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-06-27 23:23:05,224 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 133 transitions, 1084 flow [2024-06-27 23:23:05,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:05,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:05,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:23:05,224 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -613536957, now seen corresponding path program 14 times [2024-06-27 23:23:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009246580] [2024-06-27 23:23:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009246580] [2024-06-27 23:23:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009246580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468919756] [2024-06-27 23:23:07,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:08,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:08,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 133 transitions, 1084 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:08,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:08,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:08,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:08,483 INFO L124 PetriNetUnfolderBase]: 295/607 cut-off events. [2024-06-27 23:23:08,483 INFO L125 PetriNetUnfolderBase]: For 48020/48020 co-relation queries the response was YES. [2024-06-27 23:23:08,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 607 events. 295/607 cut-off events. For 48020/48020 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3069 event pairs, 48 based on Foata normal form. 2/609 useless extension candidates. Maximal degree in co-relation 3665. Up to 302 conditions per place. [2024-06-27 23:23:08,487 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 67 changer transitions 0/148 dead transitions. [2024-06-27 23:23:08,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 148 transitions, 1616 flow [2024-06-27 23:23:08,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:08,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:23:08,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-27 23:23:08,487 INFO L175 Difference]: Start difference. First operand has 183 places, 133 transitions, 1084 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:23:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 148 transitions, 1616 flow [2024-06-27 23:23:08,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 148 transitions, 1464 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:08,556 INFO L231 Difference]: Finished difference. Result has 185 places, 135 transitions, 1128 flow [2024-06-27 23:23:08,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=185, PETRI_TRANSITIONS=135} [2024-06-27 23:23:08,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 23:23:08,557 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 135 transitions, 1128 flow [2024-06-27 23:23:08,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:08,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:08,557 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 23:23:08,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:23:08,557 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:08,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -38624817, now seen corresponding path program 15 times [2024-06-27 23:23:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186296837] [2024-06-27 23:23:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:10,583 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 23:23:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186296837] [2024-06-27 23:23:10,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186296837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:10,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:10,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146441879] [2024-06-27 23:23:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:10,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:10,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 135 transitions, 1128 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:10,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:10,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:10,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:11,108 INFO L124 PetriNetUnfolderBase]: 299/615 cut-off events. [2024-06-27 23:23:11,109 INFO L125 PetriNetUnfolderBase]: For 49652/49652 co-relation queries the response was YES. [2024-06-27 23:23:11,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 615 events. 299/615 cut-off events. For 49652/49652 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3121 event pairs, 46 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3733. Up to 500 conditions per place. [2024-06-27 23:23:11,113 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 121 selfloop transitions, 22 changer transitions 0/146 dead transitions. [2024-06-27 23:23:11,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 146 transitions, 1464 flow [2024-06-27 23:23:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:23:11,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:23:11,114 INFO L175 Difference]: Start difference. First operand has 185 places, 135 transitions, 1128 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:23:11,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 146 transitions, 1464 flow [2024-06-27 23:23:11,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 146 transitions, 1348 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:11,205 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1092 flow [2024-06-27 23:23:11,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1092, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-27 23:23:11,205 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:23:11,205 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1092 flow [2024-06-27 23:23:11,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:11,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:11,206 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 23:23:11,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:23:11,206 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:11,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -576776271, now seen corresponding path program 16 times [2024-06-27 23:23:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959750442] [2024-06-27 23:23:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:11,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:13,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:13,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959750442] [2024-06-27 23:23:13,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959750442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:13,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:13,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:23:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869148736] [2024-06-27 23:23:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:13,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:23:13,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:23:13,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:23:13,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:13,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1092 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:13,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:14,249 INFO L124 PetriNetUnfolderBase]: 303/623 cut-off events. [2024-06-27 23:23:14,249 INFO L125 PetriNetUnfolderBase]: For 51204/51204 co-relation queries the response was YES. [2024-06-27 23:23:14,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 623 events. 303/623 cut-off events. For 51204/51204 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3168 event pairs, 50 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3781. Up to 506 conditions per place. [2024-06-27 23:23:14,253 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 114 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-27 23:23:14,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 146 transitions, 1432 flow [2024-06-27 23:23:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:23:14,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-27 23:23:14,254 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1092 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:23:14,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 146 transitions, 1432 flow [2024-06-27 23:23:14,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 146 transitions, 1362 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:14,336 INFO L231 Difference]: Finished difference. Result has 192 places, 138 transitions, 1129 flow [2024-06-27 23:23:14,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1129, PETRI_PLACES=192, PETRI_TRANSITIONS=138} [2024-06-27 23:23:14,337 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 23:23:14,337 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 138 transitions, 1129 flow [2024-06-27 23:23:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:14,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:14,337 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 23:23:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:23:14,337 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:14,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash 266862039, now seen corresponding path program 17 times [2024-06-27 23:23:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657383572] [2024-06-27 23:23:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:14,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:16,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:16,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657383572] [2024-06-27 23:23:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657383572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784986358] [2024-06-27 23:23:16,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:16,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:16,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:16,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:16,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:23:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 138 transitions, 1129 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:23:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:16,510 INFO L124 PetriNetUnfolderBase]: 307/631 cut-off events. [2024-06-27 23:23:16,510 INFO L125 PetriNetUnfolderBase]: For 52844/52844 co-relation queries the response was YES. [2024-06-27 23:23:16,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 631 events. 307/631 cut-off events. For 52844/52844 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3215 event pairs, 52 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3854. Up to 502 conditions per place. [2024-06-27 23:23:16,514 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 108 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-06-27 23:23:16,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 147 transitions, 1465 flow [2024-06-27 23:23:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:23:16,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:23:16,515 INFO L175 Difference]: Start difference. First operand has 192 places, 138 transitions, 1129 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:23:16,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 147 transitions, 1465 flow [2024-06-27 23:23:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 147 transitions, 1382 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:16,603 INFO L231 Difference]: Finished difference. Result has 194 places, 139 transitions, 1156 flow [2024-06-27 23:23:16,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=194, PETRI_TRANSITIONS=139} [2024-06-27 23:23:16,603 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:23:16,604 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 139 transitions, 1156 flow [2024-06-27 23:23:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:16,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:16,604 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 23:23:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:23:16,604 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:16,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash -607103217, now seen corresponding path program 18 times [2024-06-27 23:23:16,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:16,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411863403] [2024-06-27 23:23:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411863403] [2024-06-27 23:23:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411863403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550414115] [2024-06-27 23:23:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:18,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:19,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:19,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 139 transitions, 1156 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:19,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:19,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:19,450 INFO L124 PetriNetUnfolderBase]: 323/667 cut-off events. [2024-06-27 23:23:19,450 INFO L125 PetriNetUnfolderBase]: For 73429/73429 co-relation queries the response was YES. [2024-06-27 23:23:19,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 667 events. 323/667 cut-off events. For 73429/73429 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3483 event pairs, 56 based on Foata normal form. 10/677 useless extension candidates. Maximal degree in co-relation 4030. Up to 409 conditions per place. [2024-06-27 23:23:19,454 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 59 changer transitions 5/151 dead transitions. [2024-06-27 23:23:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 151 transitions, 1534 flow [2024-06-27 23:23:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:23:19,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:23:19,455 INFO L175 Difference]: Start difference. First operand has 194 places, 139 transitions, 1156 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:23:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 151 transitions, 1534 flow [2024-06-27 23:23:19,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 151 transitions, 1434 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:23:19,547 INFO L231 Difference]: Finished difference. Result has 197 places, 138 transitions, 1198 flow [2024-06-27 23:23:19,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1198, PETRI_PLACES=197, PETRI_TRANSITIONS=138} [2024-06-27 23:23:19,547 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-27 23:23:19,548 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 138 transitions, 1198 flow [2024-06-27 23:23:19,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:19,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:19,548 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 23:23:19,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:23:19,548 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:19,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash -583210011, now seen corresponding path program 19 times [2024-06-27 23:23:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378448582] [2024-06-27 23:23:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:22,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378448582] [2024-06-27 23:23:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378448582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143352217] [2024-06-27 23:23:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:22,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:22,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 138 transitions, 1198 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:22,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:22,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:22,629 INFO L124 PetriNetUnfolderBase]: 325/671 cut-off events. [2024-06-27 23:23:22,629 INFO L125 PetriNetUnfolderBase]: For 69370/69370 co-relation queries the response was YES. [2024-06-27 23:23:22,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4539 conditions, 671 events. 325/671 cut-off events. For 69370/69370 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3494 event pairs, 61 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 4457. Up to 474 conditions per place. [2024-06-27 23:23:22,635 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 110 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2024-06-27 23:23:22,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 151 transitions, 1690 flow [2024-06-27 23:23:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:23:22,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:23:22,636 INFO L175 Difference]: Start difference. First operand has 197 places, 138 transitions, 1198 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:23:22,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 151 transitions, 1690 flow [2024-06-27 23:23:22,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 151 transitions, 1548 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:22,798 INFO L231 Difference]: Finished difference. Result has 199 places, 138 transitions, 1136 flow [2024-06-27 23:23:22,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1136, PETRI_PLACES=199, PETRI_TRANSITIONS=138} [2024-06-27 23:23:22,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:23:22,798 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 138 transitions, 1136 flow [2024-06-27 23:23:22,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:22,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:22,798 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 23:23:22,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:23:22,798 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:22,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash -395627579, now seen corresponding path program 20 times [2024-06-27 23:23:22,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:22,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708310588] [2024-06-27 23:23:22,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:22,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708310588] [2024-06-27 23:23:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708310588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:25,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721676244] [2024-06-27 23:23:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:25,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:25,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:25,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:25,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 138 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:25,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:25,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:25,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:25,739 INFO L124 PetriNetUnfolderBase]: 322/665 cut-off events. [2024-06-27 23:23:25,739 INFO L125 PetriNetUnfolderBase]: For 64986/64986 co-relation queries the response was YES. [2024-06-27 23:23:25,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4299 conditions, 665 events. 322/665 cut-off events. For 64986/64986 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3431 event pairs, 89 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4216. Up to 605 conditions per place. [2024-06-27 23:23:25,744 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 129 selfloop transitions, 17 changer transitions 0/149 dead transitions. [2024-06-27 23:23:25,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 149 transitions, 1456 flow [2024-06-27 23:23:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:23:25,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:23:25,745 INFO L175 Difference]: Start difference. First operand has 199 places, 138 transitions, 1136 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:23:25,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 149 transitions, 1456 flow [2024-06-27 23:23:25,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 149 transitions, 1313 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:25,896 INFO L231 Difference]: Finished difference. Result has 202 places, 139 transitions, 1042 flow [2024-06-27 23:23:25,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1042, PETRI_PLACES=202, PETRI_TRANSITIONS=139} [2024-06-27 23:23:25,896 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 23:23:25,897 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 139 transitions, 1042 flow [2024-06-27 23:23:25,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:25,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:25,897 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 23:23:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:23:25,897 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:25,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash -576769327, now seen corresponding path program 4 times [2024-06-27 23:23:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:25,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559343578] [2024-06-27 23:23:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:28,929 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 23:23:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559343578] [2024-06-27 23:23:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559343578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:28,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:28,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:28,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390707444] [2024-06-27 23:23:28,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:28,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:28,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:28,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:28,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:29,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:29,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 139 transitions, 1042 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:29,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:29,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:29,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:29,728 INFO L124 PetriNetUnfolderBase]: 312/648 cut-off events. [2024-06-27 23:23:29,728 INFO L125 PetriNetUnfolderBase]: For 61051/61051 co-relation queries the response was YES. [2024-06-27 23:23:29,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3505 conditions, 648 events. 312/648 cut-off events. For 61051/61051 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3368 event pairs, 54 based on Foata normal form. 8/656 useless extension candidates. Maximal degree in co-relation 3421. Up to 495 conditions per place. [2024-06-27 23:23:29,732 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 31 changer transitions 9/151 dead transitions. [2024-06-27 23:23:29,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 151 transitions, 1392 flow [2024-06-27 23:23:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:23:29,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:23:29,733 INFO L175 Difference]: Start difference. First operand has 202 places, 139 transitions, 1042 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:23:29,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 151 transitions, 1392 flow [2024-06-27 23:23:29,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 151 transitions, 1281 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:29,835 INFO L231 Difference]: Finished difference. Result has 203 places, 136 transitions, 978 flow [2024-06-27 23:23:29,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=978, PETRI_PLACES=203, PETRI_TRANSITIONS=136} [2024-06-27 23:23:29,835 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-27 23:23:29,835 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 136 transitions, 978 flow [2024-06-27 23:23:29,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:29,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:29,836 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 23:23:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:23:29,836 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:29,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash -942098451, now seen corresponding path program 5 times [2024-06-27 23:23:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:29,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952983308] [2024-06-27 23:23:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:29,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952983308] [2024-06-27 23:23:32,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952983308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:32,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:32,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320432928] [2024-06-27 23:23:32,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:32,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:32,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:32,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 136 transitions, 978 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:32,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:32,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:32,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:33,137 INFO L124 PetriNetUnfolderBase]: 285/599 cut-off events. [2024-06-27 23:23:33,138 INFO L125 PetriNetUnfolderBase]: For 41918/41918 co-relation queries the response was YES. [2024-06-27 23:23:33,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 599 events. 285/599 cut-off events. For 41918/41918 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3077 event pairs, 44 based on Foata normal form. 8/607 useless extension candidates. Maximal degree in co-relation 2549. Up to 445 conditions per place. [2024-06-27 23:23:33,141 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 29 changer transitions 9/148 dead transitions. [2024-06-27 23:23:33,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 148 transitions, 1322 flow [2024-06-27 23:23:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:23:33,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:23:33,142 INFO L175 Difference]: Start difference. First operand has 203 places, 136 transitions, 978 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:23:33,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 148 transitions, 1322 flow [2024-06-27 23:23:33,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 148 transitions, 1256 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:33,204 INFO L231 Difference]: Finished difference. Result has 201 places, 133 transitions, 954 flow [2024-06-27 23:23:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=954, PETRI_PLACES=201, PETRI_TRANSITIONS=133} [2024-06-27 23:23:33,205 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 23:23:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 133 transitions, 954 flow [2024-06-27 23:23:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:33,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:33,205 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 23:23:33,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:23:33,205 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:33,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash -576530317, now seen corresponding path program 6 times [2024-06-27 23:23:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:33,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936742116] [2024-06-27 23:23:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:35,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:35,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936742116] [2024-06-27 23:23:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936742116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:35,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247844893] [2024-06-27 23:23:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:35,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:35,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 133 transitions, 954 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:35,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:35,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:35,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:36,132 INFO L124 PetriNetUnfolderBase]: 298/628 cut-off events. [2024-06-27 23:23:36,132 INFO L125 PetriNetUnfolderBase]: For 55352/55352 co-relation queries the response was YES. [2024-06-27 23:23:36,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 628 events. 298/628 cut-off events. For 55352/55352 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3247 event pairs, 50 based on Foata normal form. 6/634 useless extension candidates. Maximal degree in co-relation 3233. Up to 431 conditions per place. [2024-06-27 23:23:36,137 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 27 changer transitions 7/149 dead transitions. [2024-06-27 23:23:36,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 149 transitions, 1474 flow [2024-06-27 23:23:36,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:23:36,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:23:36,137 INFO L175 Difference]: Start difference. First operand has 201 places, 133 transitions, 954 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:23:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 149 transitions, 1474 flow [2024-06-27 23:23:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 149 transitions, 1408 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:36,239 INFO L231 Difference]: Finished difference. Result has 199 places, 130 transitions, 930 flow [2024-06-27 23:23:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=930, PETRI_PLACES=199, PETRI_TRANSITIONS=130} [2024-06-27 23:23:36,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:23:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 130 transitions, 930 flow [2024-06-27 23:23:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:36,240 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 23:23:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:23:36,240 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1849531921, now seen corresponding path program 7 times [2024-06-27 23:23:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008764284] [2024-06-27 23:23:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008764284] [2024-06-27 23:23:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008764284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:38,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:38,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063667952] [2024-06-27 23:23:38,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:38,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:38,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:38,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 130 transitions, 930 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:38,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:38,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:38,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:39,505 INFO L124 PetriNetUnfolderBase]: 295/623 cut-off events. [2024-06-27 23:23:39,506 INFO L125 PetriNetUnfolderBase]: For 61478/61478 co-relation queries the response was YES. [2024-06-27 23:23:39,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3300 conditions, 623 events. 295/623 cut-off events. For 61478/61478 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3221 event pairs, 56 based on Foata normal form. 8/631 useless extension candidates. Maximal degree in co-relation 3217. Up to 383 conditions per place. [2024-06-27 23:23:39,509 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 76 selfloop transitions, 54 changer transitions 9/142 dead transitions. [2024-06-27 23:23:39,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 142 transitions, 1262 flow [2024-06-27 23:23:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:23:39,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:23:39,510 INFO L175 Difference]: Start difference. First operand has 199 places, 130 transitions, 930 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:23:39,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 142 transitions, 1262 flow [2024-06-27 23:23:39,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 142 transitions, 1200 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:39,599 INFO L231 Difference]: Finished difference. Result has 196 places, 127 transitions, 965 flow [2024-06-27 23:23:39,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=965, PETRI_PLACES=196, PETRI_TRANSITIONS=127} [2024-06-27 23:23:39,599 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-27 23:23:39,599 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 127 transitions, 965 flow [2024-06-27 23:23:39,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:39,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:39,600 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 23:23:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:23:39,600 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:39,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash -606857263, now seen corresponding path program 8 times [2024-06-27 23:23:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:39,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600906882] [2024-06-27 23:23:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:42,218 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 23:23:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:42,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600906882] [2024-06-27 23:23:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600906882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:42,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481736683] [2024-06-27 23:23:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:42,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:42,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:42,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:42,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 127 transitions, 965 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:42,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:42,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:42,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:42,851 INFO L124 PetriNetUnfolderBase]: 308/658 cut-off events. [2024-06-27 23:23:42,852 INFO L125 PetriNetUnfolderBase]: For 71138/71138 co-relation queries the response was YES. [2024-06-27 23:23:42,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 658 events. 308/658 cut-off events. For 71138/71138 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3462 event pairs, 64 based on Foata normal form. 6/664 useless extension candidates. Maximal degree in co-relation 3913. Up to 369 conditions per place. [2024-06-27 23:23:42,856 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 50 changer transitions 7/143 dead transitions. [2024-06-27 23:23:42,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 143 transitions, 1467 flow [2024-06-27 23:23:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:23:42,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-27 23:23:42,856 INFO L175 Difference]: Start difference. First operand has 196 places, 127 transitions, 965 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:23:42,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 143 transitions, 1467 flow [2024-06-27 23:23:42,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 143 transitions, 1351 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:42,963 INFO L231 Difference]: Finished difference. Result has 194 places, 124 transitions, 939 flow [2024-06-27 23:23:42,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=939, PETRI_PLACES=194, PETRI_TRANSITIONS=124} [2024-06-27 23:23:42,963 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:23:42,964 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 124 transitions, 939 flow [2024-06-27 23:23:42,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:42,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:42,964 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 23:23:42,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:23:42,964 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:42,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash -583025437, now seen corresponding path program 9 times [2024-06-27 23:23:42,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:42,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678426578] [2024-06-27 23:23:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:42,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:45,462 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 23:23:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:45,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678426578] [2024-06-27 23:23:45,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678426578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:45,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:45,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481497774] [2024-06-27 23:23:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:45,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:45,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:45,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:45,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 124 transitions, 939 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:45,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:45,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:45,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:46,253 INFO L124 PetriNetUnfolderBase]: 283/599 cut-off events. [2024-06-27 23:23:46,253 INFO L125 PetriNetUnfolderBase]: For 57990/57990 co-relation queries the response was YES. [2024-06-27 23:23:46,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 599 events. 283/599 cut-off events. For 57990/57990 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3106 event pairs, 54 based on Foata normal form. 8/607 useless extension candidates. Maximal degree in co-relation 3133. Up to 457 conditions per place. [2024-06-27 23:23:46,258 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 99 selfloop transitions, 25 changer transitions 9/136 dead transitions. [2024-06-27 23:23:46,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 136 transitions, 1257 flow [2024-06-27 23:23:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:23:46,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:23:46,259 INFO L175 Difference]: Start difference. First operand has 194 places, 124 transitions, 939 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:23:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 136 transitions, 1257 flow [2024-06-27 23:23:46,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 136 transitions, 1153 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:23:46,338 INFO L231 Difference]: Finished difference. Result has 191 places, 121 transitions, 870 flow [2024-06-27 23:23:46,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=121} [2024-06-27 23:23:46,338 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 23:23:46,338 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 121 transitions, 870 flow [2024-06-27 23:23:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:46,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:46,338 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 23:23:46,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:23:46,339 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:46,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash 242798147, now seen corresponding path program 10 times [2024-06-27 23:23:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:46,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388040707] [2024-06-27 23:23:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:46,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:49,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:49,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388040707] [2024-06-27 23:23:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388040707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:23:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201930541] [2024-06-27 23:23:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:49,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:23:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:23:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:23:50,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:23:50,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 121 transitions, 870 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:50,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:50,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:23:50,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:50,638 INFO L124 PetriNetUnfolderBase]: 256/546 cut-off events. [2024-06-27 23:23:50,638 INFO L125 PetriNetUnfolderBase]: For 36572/36572 co-relation queries the response was YES. [2024-06-27 23:23:50,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 546 events. 256/546 cut-off events. For 36572/36572 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2776 event pairs, 42 based on Foata normal form. 8/554 useless extension candidates. Maximal degree in co-relation 2313. Up to 319 conditions per place. [2024-06-27 23:23:50,641 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 46 changer transitions 9/133 dead transitions. [2024-06-27 23:23:50,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 133 transitions, 1182 flow [2024-06-27 23:23:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:23:50,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:23:50,659 INFO L175 Difference]: Start difference. First operand has 191 places, 121 transitions, 870 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:23:50,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 133 transitions, 1182 flow [2024-06-27 23:23:50,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 133 transitions, 1128 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:50,710 INFO L231 Difference]: Finished difference. Result has 188 places, 118 transitions, 893 flow [2024-06-27 23:23:50,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=188, PETRI_TRANSITIONS=118} [2024-06-27 23:23:50,710 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 23:23:50,710 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 118 transitions, 893 flow [2024-06-27 23:23:50,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:50,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:50,711 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 23:23:50,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:23:50,711 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:50,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash -395620635, now seen corresponding path program 11 times [2024-06-27 23:23:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:50,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943301743] [2024-06-27 23:23:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:50,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943301743] [2024-06-27 23:23:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943301743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:54,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450013491] [2024-06-27 23:23:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:54,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:54,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:54,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:54,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 118 transitions, 893 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:54,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:54,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:54,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:54,802 INFO L124 PetriNetUnfolderBase]: 251/542 cut-off events. [2024-06-27 23:23:54,802 INFO L125 PetriNetUnfolderBase]: For 34436/34436 co-relation queries the response was YES. [2024-06-27 23:23:54,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 542 events. 251/542 cut-off events. For 34436/34436 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2742 event pairs, 71 based on Foata normal form. 8/550 useless extension candidates. Maximal degree in co-relation 2320. Up to 437 conditions per place. [2024-06-27 23:23:54,806 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 99 selfloop transitions, 21 changer transitions 9/132 dead transitions. [2024-06-27 23:23:54,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 132 transitions, 1209 flow [2024-06-27 23:23:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:23:54,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:23:54,807 INFO L175 Difference]: Start difference. First operand has 188 places, 118 transitions, 893 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:23:54,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 132 transitions, 1209 flow [2024-06-27 23:23:54,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 132 transitions, 1113 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:54,857 INFO L231 Difference]: Finished difference. Result has 185 places, 115 transitions, 824 flow [2024-06-27 23:23:54,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=824, PETRI_PLACES=185, PETRI_TRANSITIONS=115} [2024-06-27 23:23:54,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 23:23:54,858 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 115 transitions, 824 flow [2024-06-27 23:23:54,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:54,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:54,858 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 23:23:54,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:23:54,858 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:54,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash -395381625, now seen corresponding path program 12 times [2024-06-27 23:23:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42355928] [2024-06-27 23:23:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42355928] [2024-06-27 23:23:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42355928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:23:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188980734] [2024-06-27 23:23:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:23:57,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:57,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:23:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:23:57,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:23:57,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 115 transitions, 824 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:57,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:57,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:23:57,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:58,220 INFO L124 PetriNetUnfolderBase]: 267/584 cut-off events. [2024-06-27 23:23:58,220 INFO L125 PetriNetUnfolderBase]: For 45128/45128 co-relation queries the response was YES. [2024-06-27 23:23:58,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 584 events. 267/584 cut-off events. For 45128/45128 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3029 event pairs, 79 based on Foata normal form. 6/590 useless extension candidates. Maximal degree in co-relation 2932. Up to 436 conditions per place. [2024-06-27 23:23:58,224 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 110 selfloop transitions, 16 changer transitions 6/135 dead transitions. [2024-06-27 23:23:58,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 135 transitions, 1322 flow [2024-06-27 23:23:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:23:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:23:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:23:58,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:23:58,225 INFO L175 Difference]: Start difference. First operand has 185 places, 115 transitions, 824 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:23:58,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 135 transitions, 1322 flow [2024-06-27 23:23:58,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 135 transitions, 1268 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:23:58,311 INFO L231 Difference]: Finished difference. Result has 184 places, 115 transitions, 820 flow [2024-06-27 23:23:58,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=820, PETRI_PLACES=184, PETRI_TRANSITIONS=115} [2024-06-27 23:23:58,312 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:23:58,312 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 115 transitions, 820 flow [2024-06-27 23:23:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:58,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:58,312 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 23:23:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:23:58,312 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:23:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash 464673827, now seen corresponding path program 13 times [2024-06-27 23:23:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351942616] [2024-06-27 23:23:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351942616] [2024-06-27 23:24:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351942616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:00,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:00,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594547222] [2024-06-27 23:24:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:00,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:00,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 115 transitions, 820 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:00,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:00,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:00,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:01,379 INFO L124 PetriNetUnfolderBase]: 243/528 cut-off events. [2024-06-27 23:24:01,379 INFO L125 PetriNetUnfolderBase]: For 32354/32354 co-relation queries the response was YES. [2024-06-27 23:24:01,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 528 events. 243/528 cut-off events. For 32354/32354 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2684 event pairs, 69 based on Foata normal form. 8/536 useless extension candidates. Maximal degree in co-relation 2212. Up to 427 conditions per place. [2024-06-27 23:24:01,382 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 98 selfloop transitions, 17 changer transitions 11/129 dead transitions. [2024-06-27 23:24:01,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 129 transitions, 1130 flow [2024-06-27 23:24:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:01,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 23:24:01,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:24:01,383 INFO L175 Difference]: Start difference. First operand has 184 places, 115 transitions, 820 flow. Second operand 12 states and 135 transitions. [2024-06-27 23:24:01,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 129 transitions, 1130 flow [2024-06-27 23:24:01,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 129 transitions, 1097 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:01,435 INFO L231 Difference]: Finished difference. Result has 185 places, 111 transitions, 794 flow [2024-06-27 23:24:01,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=794, PETRI_PLACES=185, PETRI_TRANSITIONS=111} [2024-06-27 23:24:01,435 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 23:24:01,435 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 111 transitions, 794 flow [2024-06-27 23:24:01,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:01,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:01,435 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 23:24:01,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:24:01,435 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:01,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:01,436 INFO L85 PathProgramCache]: Analyzing trace with hash -960184545, now seen corresponding path program 14 times [2024-06-27 23:24:01,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:01,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665665738] [2024-06-27 23:24:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665665738] [2024-06-27 23:24:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665665738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:04,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116685545] [2024-06-27 23:24:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:04,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:04,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 111 transitions, 794 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:04,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:04,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:04,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:04,964 INFO L124 PetriNetUnfolderBase]: 237/520 cut-off events. [2024-06-27 23:24:04,964 INFO L125 PetriNetUnfolderBase]: For 31318/31318 co-relation queries the response was YES. [2024-06-27 23:24:04,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 520 events. 237/520 cut-off events. For 31318/31318 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2627 event pairs, 71 based on Foata normal form. 8/528 useless extension candidates. Maximal degree in co-relation 2166. Up to 423 conditions per place. [2024-06-27 23:24:04,967 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 98 selfloop transitions, 16 changer transitions 9/126 dead transitions. [2024-06-27 23:24:04,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 126 transitions, 1100 flow [2024-06-27 23:24:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:24:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:24:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-27 23:24:04,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:24:04,968 INFO L175 Difference]: Start difference. First operand has 185 places, 111 transitions, 794 flow. Second operand 13 states and 143 transitions. [2024-06-27 23:24:04,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 126 transitions, 1100 flow [2024-06-27 23:24:05,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 126 transitions, 1058 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:05,015 INFO L231 Difference]: Finished difference. Result has 181 places, 108 transitions, 768 flow [2024-06-27 23:24:05,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=768, PETRI_PLACES=181, PETRI_TRANSITIONS=108} [2024-06-27 23:24:05,016 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-27 23:24:05,016 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 108 transitions, 768 flow [2024-06-27 23:24:05,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:05,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:05,016 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 23:24:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:24:05,016 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1237232475, now seen corresponding path program 15 times [2024-06-27 23:24:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117516129] [2024-06-27 23:24:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117516129] [2024-06-27 23:24:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117516129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:07,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:07,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329089903] [2024-06-27 23:24:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:07,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:07,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 108 transitions, 768 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:07,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:07,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:08,056 INFO L124 PetriNetUnfolderBase]: 228/507 cut-off events. [2024-06-27 23:24:08,056 INFO L125 PetriNetUnfolderBase]: For 26406/26406 co-relation queries the response was YES. [2024-06-27 23:24:08,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 507 events. 228/507 cut-off events. For 26406/26406 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2555 event pairs, 67 based on Foata normal form. 6/513 useless extension candidates. Maximal degree in co-relation 2098. Up to 413 conditions per place. [2024-06-27 23:24:08,059 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 96 selfloop transitions, 14 changer transitions 10/123 dead transitions. [2024-06-27 23:24:08,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 123 transitions, 1062 flow [2024-06-27 23:24:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:24:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:24:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-27 23:24:08,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36153846153846153 [2024-06-27 23:24:08,060 INFO L175 Difference]: Start difference. First operand has 181 places, 108 transitions, 768 flow. Second operand 13 states and 141 transitions. [2024-06-27 23:24:08,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 123 transitions, 1062 flow [2024-06-27 23:24:08,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 123 transitions, 1024 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 23:24:08,107 INFO L231 Difference]: Finished difference. Result has 179 places, 105 transitions, 743 flow [2024-06-27 23:24:08,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=743, PETRI_PLACES=179, PETRI_TRANSITIONS=105} [2024-06-27 23:24:08,107 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-27 23:24:08,107 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 105 transitions, 743 flow [2024-06-27 23:24:08,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:08,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:08,107 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 23:24:08,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:24:08,108 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:08,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 473014067, now seen corresponding path program 16 times [2024-06-27 23:24:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177503734] [2024-06-27 23:24:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:10,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177503734] [2024-06-27 23:24:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177503734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:10,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:10,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:10,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659253296] [2024-06-27 23:24:10,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:10,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:10,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:10,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 105 transitions, 743 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:10,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:10,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:10,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:11,002 INFO L124 PetriNetUnfolderBase]: 214/477 cut-off events. [2024-06-27 23:24:11,002 INFO L125 PetriNetUnfolderBase]: For 22342/22342 co-relation queries the response was YES. [2024-06-27 23:24:11,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 477 events. 214/477 cut-off events. For 22342/22342 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2350 event pairs, 62 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 1830. Up to 382 conditions per place. [2024-06-27 23:24:11,004 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 92 selfloop transitions, 12 changer transitions 13/120 dead transitions. [2024-06-27 23:24:11,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 120 transitions, 1009 flow [2024-06-27 23:24:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:24:11,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-27 23:24:11,005 INFO L175 Difference]: Start difference. First operand has 179 places, 105 transitions, 743 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:24:11,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 120 transitions, 1009 flow [2024-06-27 23:24:11,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 120 transitions, 973 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:24:11,035 INFO L231 Difference]: Finished difference. Result has 174 places, 100 transitions, 691 flow [2024-06-27 23:24:11,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=691, PETRI_PLACES=174, PETRI_TRANSITIONS=100} [2024-06-27 23:24:11,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 23:24:11,036 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 100 transitions, 691 flow [2024-06-27 23:24:11,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:11,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:11,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:24:11,036 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:11,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1506173339, now seen corresponding path program 1 times [2024-06-27 23:24:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:11,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051550444] [2024-06-27 23:24:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051550444] [2024-06-27 23:24:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051550444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:13,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:13,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857108177] [2024-06-27 23:24:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:13,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:13,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:13,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 100 transitions, 691 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:13,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:13,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:13,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:13,807 INFO L124 PetriNetUnfolderBase]: 203/453 cut-off events. [2024-06-27 23:24:13,807 INFO L125 PetriNetUnfolderBase]: For 21528/21528 co-relation queries the response was YES. [2024-06-27 23:24:13,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 453 events. 203/453 cut-off events. For 21528/21528 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2194 event pairs, 36 based on Foata normal form. 6/459 useless extension candidates. Maximal degree in co-relation 1717. Up to 335 conditions per place. [2024-06-27 23:24:13,809 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 83 selfloop transitions, 18 changer transitions 12/116 dead transitions. [2024-06-27 23:24:13,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 116 transitions, 959 flow [2024-06-27 23:24:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:24:13,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 23:24:13,810 INFO L175 Difference]: Start difference. First operand has 174 places, 100 transitions, 691 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:24:13,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 116 transitions, 959 flow [2024-06-27 23:24:13,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 116 transitions, 890 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 23:24:13,839 INFO L231 Difference]: Finished difference. Result has 164 places, 95 transitions, 623 flow [2024-06-27 23:24:13,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=623, PETRI_PLACES=164, PETRI_TRANSITIONS=95} [2024-06-27 23:24:13,839 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 23:24:13,839 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 95 transitions, 623 flow [2024-06-27 23:24:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:13,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:13,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:24:13,840 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:13,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash -155655969, now seen corresponding path program 2 times [2024-06-27 23:24:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003541589] [2024-06-27 23:24:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003541589] [2024-06-27 23:24:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003541589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:16,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:16,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:16,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035129341] [2024-06-27 23:24:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:16,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 95 transitions, 623 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:16,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:16,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:16,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:16,796 INFO L124 PetriNetUnfolderBase]: 192/436 cut-off events. [2024-06-27 23:24:16,796 INFO L125 PetriNetUnfolderBase]: For 18953/18953 co-relation queries the response was YES. [2024-06-27 23:24:16,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 436 events. 192/436 cut-off events. For 18953/18953 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2104 event pairs, 25 based on Foata normal form. 6/442 useless extension candidates. Maximal degree in co-relation 1575. Up to 297 conditions per place. [2024-06-27 23:24:16,799 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 7 changer transitions 30/112 dead transitions. [2024-06-27 23:24:16,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 112 transitions, 881 flow [2024-06-27 23:24:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:24:16,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:24:16,800 INFO L175 Difference]: Start difference. First operand has 164 places, 95 transitions, 623 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:24:16,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 112 transitions, 881 flow [2024-06-27 23:24:16,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 112 transitions, 841 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:16,825 INFO L231 Difference]: Finished difference. Result has 162 places, 78 transitions, 479 flow [2024-06-27 23:24:16,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=479, PETRI_PLACES=162, PETRI_TRANSITIONS=78} [2024-06-27 23:24:16,826 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 23:24:16,826 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 78 transitions, 479 flow [2024-06-27 23:24:16,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:16,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:16,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:24:16,826 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:16,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2026856221, now seen corresponding path program 3 times [2024-06-27 23:24:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386395743] [2024-06-27 23:24:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:19,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:19,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386395743] [2024-06-27 23:24:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386395743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:19,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:19,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:24:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761779147] [2024-06-27 23:24:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:19,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:24:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:24:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:24:19,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:19,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 78 transitions, 479 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:19,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:19,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:19,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:20,185 INFO L124 PetriNetUnfolderBase]: 159/355 cut-off events. [2024-06-27 23:24:20,185 INFO L125 PetriNetUnfolderBase]: For 18193/18193 co-relation queries the response was YES. [2024-06-27 23:24:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 355 events. 159/355 cut-off events. For 18193/18193 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1559 event pairs, 25 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 1288. Up to 256 conditions per place. [2024-06-27 23:24:20,188 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 14 changer transitions 12/92 dead transitions. [2024-06-27 23:24:20,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 92 transitions, 689 flow [2024-06-27 23:24:20,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:24:20,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:24:20,188 INFO L175 Difference]: Start difference. First operand has 162 places, 78 transitions, 479 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:24:20,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 92 transitions, 689 flow [2024-06-27 23:24:20,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 92 transitions, 633 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-27 23:24:20,207 INFO L231 Difference]: Finished difference. Result has 136 places, 73 transitions, 431 flow [2024-06-27 23:24:20,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=431, PETRI_PLACES=136, PETRI_TRANSITIONS=73} [2024-06-27 23:24:20,207 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 107 predicate places. [2024-06-27 23:24:20,207 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 73 transitions, 431 flow [2024-06-27 23:24:20,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:20,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:20,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:20,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:24:20,207 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:20,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2068809285, now seen corresponding path program 4 times [2024-06-27 23:24:20,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199869071] [2024-06-27 23:24:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:22,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199869071] [2024-06-27 23:24:22,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199869071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:22,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:22,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462117242] [2024-06-27 23:24:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:22,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:22,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:22,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:23,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:23,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 73 transitions, 431 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:23,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:23,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:23,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:23,496 INFO L124 PetriNetUnfolderBase]: 149/335 cut-off events. [2024-06-27 23:24:23,496 INFO L125 PetriNetUnfolderBase]: For 14453/14453 co-relation queries the response was YES. [2024-06-27 23:24:23,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 335 events. 149/335 cut-off events. For 14453/14453 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1460 event pairs, 25 based on Foata normal form. 6/341 useless extension candidates. Maximal degree in co-relation 1189. Up to 246 conditions per place. [2024-06-27 23:24:23,497 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 60 selfloop transitions, 13 changer transitions 11/87 dead transitions. [2024-06-27 23:24:23,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 87 transitions, 631 flow [2024-06-27 23:24:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:24:23,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:24:23,498 INFO L175 Difference]: Start difference. First operand has 136 places, 73 transitions, 431 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:24:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 87 transitions, 631 flow [2024-06-27 23:24:23,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 87 transitions, 595 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:24:23,515 INFO L231 Difference]: Finished difference. Result has 130 places, 69 transitions, 406 flow [2024-06-27 23:24:23,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=406, PETRI_PLACES=130, PETRI_TRANSITIONS=69} [2024-06-27 23:24:23,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-27 23:24:23,515 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 69 transitions, 406 flow [2024-06-27 23:24:23,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:23,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:23,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:23,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:24:23,516 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:23,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1145339453, now seen corresponding path program 5 times [2024-06-27 23:24:23,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:23,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282139223] [2024-06-27 23:24:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:23,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282139223] [2024-06-27 23:24:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282139223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:26,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:26,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:26,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431436440] [2024-06-27 23:24:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:26,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:26,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:26,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:26,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 69 transitions, 406 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:26,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:27,091 INFO L124 PetriNetUnfolderBase]: 140/320 cut-off events. [2024-06-27 23:24:27,092 INFO L125 PetriNetUnfolderBase]: For 12743/12743 co-relation queries the response was YES. [2024-06-27 23:24:27,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 320 events. 140/320 cut-off events. For 12743/12743 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1360 event pairs, 23 based on Foata normal form. 6/326 useless extension candidates. Maximal degree in co-relation 1127. Up to 218 conditions per place. [2024-06-27 23:24:27,093 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 3 changer transitions 28/84 dead transitions. [2024-06-27 23:24:27,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 84 transitions, 602 flow [2024-06-27 23:24:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:24:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:24:27,094 INFO L175 Difference]: Start difference. First operand has 130 places, 69 transitions, 406 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:24:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 84 transitions, 602 flow [2024-06-27 23:24:27,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 84 transitions, 570 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:27,106 INFO L231 Difference]: Finished difference. Result has 126 places, 55 transitions, 315 flow [2024-06-27 23:24:27,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=315, PETRI_PLACES=126, PETRI_TRANSITIONS=55} [2024-06-27 23:24:27,106 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-27 23:24:27,107 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 55 transitions, 315 flow [2024-06-27 23:24:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:27,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:27,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:27,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:24:27,107 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:27,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1193793389, now seen corresponding path program 6 times [2024-06-27 23:24:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222038274] [2024-06-27 23:24:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:29,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:29,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222038274] [2024-06-27 23:24:29,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222038274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:29,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:29,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851830477] [2024-06-27 23:24:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:29,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:29,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:29,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:30,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:30,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 55 transitions, 315 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:30,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:30,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:30,456 INFO L124 PetriNetUnfolderBase]: 115/258 cut-off events. [2024-06-27 23:24:30,457 INFO L125 PetriNetUnfolderBase]: For 11598/11598 co-relation queries the response was YES. [2024-06-27 23:24:30,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 258 events. 115/258 cut-off events. For 11598/11598 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1040 event pairs, 21 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 926. Up to 188 conditions per place. [2024-06-27 23:24:30,458 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 44 selfloop transitions, 8 changer transitions 13/68 dead transitions. [2024-06-27 23:24:30,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 68 transitions, 473 flow [2024-06-27 23:24:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:24:30,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:24:30,458 INFO L175 Difference]: Start difference. First operand has 126 places, 55 transitions, 315 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:24:30,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 68 transitions, 473 flow [2024-06-27 23:24:30,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 68 transitions, 441 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-06-27 23:24:30,466 INFO L231 Difference]: Finished difference. Result has 102 places, 51 transitions, 284 flow [2024-06-27 23:24:30,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=102, PETRI_TRANSITIONS=51} [2024-06-27 23:24:30,467 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-27 23:24:30,467 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 51 transitions, 284 flow [2024-06-27 23:24:30,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:24:30,467 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:30,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:30,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1323099849, now seen corresponding path program 7 times [2024-06-27 23:24:30,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:30,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472442797] [2024-06-27 23:24:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:32,814 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 23:24:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472442797] [2024-06-27 23:24:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472442797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552058359] [2024-06-27 23:24:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:32,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:32,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:24:32,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 51 transitions, 284 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:32,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:32,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:24:32,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:33,131 INFO L124 PetriNetUnfolderBase]: 104/237 cut-off events. [2024-06-27 23:24:33,132 INFO L125 PetriNetUnfolderBase]: For 6932/6932 co-relation queries the response was YES. [2024-06-27 23:24:33,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 237 events. 104/237 cut-off events. For 6932/6932 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 916 event pairs, 17 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 817. Up to 162 conditions per place. [2024-06-27 23:24:33,133 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 40 selfloop transitions, 5 changer transitions 16/65 dead transitions. [2024-06-27 23:24:33,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 65 transitions, 436 flow [2024-06-27 23:24:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:24:33,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-27 23:24:33,134 INFO L175 Difference]: Start difference. First operand has 102 places, 51 transitions, 284 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:24:33,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 65 transitions, 436 flow [2024-06-27 23:24:33,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 65 transitions, 412 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:33,139 INFO L231 Difference]: Finished difference. Result has 95 places, 46 transitions, 250 flow [2024-06-27 23:24:33,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=95, PETRI_TRANSITIONS=46} [2024-06-27 23:24:33,140 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 23:24:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 46 transitions, 250 flow [2024-06-27 23:24:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:33,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:24:33,141 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:33,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1834268935, now seen corresponding path program 8 times [2024-06-27 23:24:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703609080] [2024-06-27 23:24:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:35,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:35,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703609080] [2024-06-27 23:24:35,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703609080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:35,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:35,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:35,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447319636] [2024-06-27 23:24:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:35,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:35,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:35,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:35,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 46 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:35,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:35,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:35,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:36,354 INFO L124 PetriNetUnfolderBase]: 89/206 cut-off events. [2024-06-27 23:24:36,355 INFO L125 PetriNetUnfolderBase]: For 5758/5762 co-relation queries the response was YES. [2024-06-27 23:24:36,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 206 events. 89/206 cut-off events. For 5758/5762 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 745 event pairs, 17 based on Foata normal form. 10/216 useless extension candidates. Maximal degree in co-relation 715. Up to 110 conditions per place. [2024-06-27 23:24:36,355 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 29 selfloop transitions, 16 changer transitions 10/58 dead transitions. [2024-06-27 23:24:36,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 58 transitions, 386 flow [2024-06-27 23:24:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:24:36,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:24:36,356 INFO L175 Difference]: Start difference. First operand has 95 places, 46 transitions, 250 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:24:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 58 transitions, 386 flow [2024-06-27 23:24:36,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 58 transitions, 366 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:36,360 INFO L231 Difference]: Finished difference. Result has 88 places, 43 transitions, 251 flow [2024-06-27 23:24:36,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=251, PETRI_PLACES=88, PETRI_TRANSITIONS=43} [2024-06-27 23:24:36,361 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 23:24:36,361 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 43 transitions, 251 flow [2024-06-27 23:24:36,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:36,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:36,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:36,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:24:36,361 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:36,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:36,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1839775465, now seen corresponding path program 9 times [2024-06-27 23:24:36,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:36,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658757081] [2024-06-27 23:24:36,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:36,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:39,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:39,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658757081] [2024-06-27 23:24:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658757081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299248703] [2024-06-27 23:24:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:39,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:39,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:40,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:40,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 43 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:40,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:40,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:40,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:40,501 INFO L124 PetriNetUnfolderBase]: 82/193 cut-off events. [2024-06-27 23:24:40,501 INFO L125 PetriNetUnfolderBase]: For 4410/4410 co-relation queries the response was YES. [2024-06-27 23:24:40,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 193 events. 82/193 cut-off events. For 4410/4410 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 671 event pairs, 15 based on Foata normal form. 6/199 useless extension candidates. Maximal degree in co-relation 676. Up to 80 conditions per place. [2024-06-27 23:24:40,501 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 27 selfloop transitions, 16 changer transitions 10/56 dead transitions. [2024-06-27 23:24:40,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 56 transitions, 385 flow [2024-06-27 23:24:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:24:40,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:24:40,502 INFO L175 Difference]: Start difference. First operand has 88 places, 43 transitions, 251 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:24:40,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 56 transitions, 385 flow [2024-06-27 23:24:40,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 56 transitions, 347 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:40,506 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 229 flow [2024-06-27 23:24:40,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=229, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2024-06-27 23:24:40,506 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 23:24:40,506 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 229 flow [2024-06-27 23:24:40,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:40,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:40,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:40,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:24:40,506 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:40,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2460585, now seen corresponding path program 10 times [2024-06-27 23:24:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635571716] [2024-06-27 23:24:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635571716] [2024-06-27 23:24:43,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635571716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:43,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:43,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:24:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967683363] [2024-06-27 23:24:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:24:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:24:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:24:44,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:24:44,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 39 transitions, 229 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:44,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:44,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:24:44,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:44,354 INFO L124 PetriNetUnfolderBase]: 71/170 cut-off events. [2024-06-27 23:24:44,355 INFO L125 PetriNetUnfolderBase]: For 3780/3780 co-relation queries the response was YES. [2024-06-27 23:24:44,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 170 events. 71/170 cut-off events. For 3780/3780 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 559 event pairs, 15 based on Foata normal form. 6/176 useless extension candidates. Maximal degree in co-relation 607. Up to 103 conditions per place. [2024-06-27 23:24:44,355 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 28 selfloop transitions, 8 changer transitions 11/51 dead transitions. [2024-06-27 23:24:44,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 51 transitions, 349 flow [2024-06-27 23:24:44,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:24:44,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-27 23:24:44,356 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 229 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:24:44,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 51 transitions, 349 flow [2024-06-27 23:24:44,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 51 transitions, 309 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:24:44,359 INFO L231 Difference]: Finished difference. Result has 77 places, 35 transitions, 189 flow [2024-06-27 23:24:44,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=77, PETRI_TRANSITIONS=35} [2024-06-27 23:24:44,359 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-27 23:24:44,359 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 35 transitions, 189 flow [2024-06-27 23:24:44,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:44,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:44,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:24:44,359 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -196841205, now seen corresponding path program 11 times [2024-06-27 23:24:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041522700] [2024-06-27 23:24:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:49,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041522700] [2024-06-27 23:24:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041522700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:49,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194237267] [2024-06-27 23:24:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:49,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:49,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:49,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 35 transitions, 189 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:49,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:49,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:49,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:49,871 INFO L124 PetriNetUnfolderBase]: 63/152 cut-off events. [2024-06-27 23:24:49,872 INFO L125 PetriNetUnfolderBase]: For 2902/2902 co-relation queries the response was YES. [2024-06-27 23:24:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 152 events. 63/152 cut-off events. For 2902/2902 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 473 event pairs, 15 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 523. Up to 93 conditions per place. [2024-06-27 23:24:49,872 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 26 selfloop transitions, 8 changer transitions 10/47 dead transitions. [2024-06-27 23:24:49,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 303 flow [2024-06-27 23:24:49,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:24:49,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:24:49,873 INFO L175 Difference]: Start difference. First operand has 77 places, 35 transitions, 189 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:24:49,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 303 flow [2024-06-27 23:24:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 47 transitions, 279 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:49,875 INFO L231 Difference]: Finished difference. Result has 72 places, 32 transitions, 170 flow [2024-06-27 23:24:49,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=170, PETRI_PLACES=72, PETRI_TRANSITIONS=32} [2024-06-27 23:24:49,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 23:24:49,875 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 32 transitions, 170 flow [2024-06-27 23:24:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:49,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:49,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:24:49,876 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:49,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -322716895, now seen corresponding path program 12 times [2024-06-27 23:24:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:49,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414506044] [2024-06-27 23:24:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:52,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414506044] [2024-06-27 23:24:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414506044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:52,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:52,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757937321] [2024-06-27 23:24:52,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:52,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:52,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:52,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 32 transitions, 170 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:52,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:52,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:53,157 INFO L124 PetriNetUnfolderBase]: 56/139 cut-off events. [2024-06-27 23:24:53,158 INFO L125 PetriNetUnfolderBase]: For 2187/2187 co-relation queries the response was YES. [2024-06-27 23:24:53,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 139 events. 56/139 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 405 event pairs, 13 based on Foata normal form. 6/145 useless extension candidates. Maximal degree in co-relation 468. Up to 75 conditions per place. [2024-06-27 23:24:53,158 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 21 selfloop transitions, 4 changer transitions 17/45 dead transitions. [2024-06-27 23:24:53,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 45 transitions, 282 flow [2024-06-27 23:24:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:24:53,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:24:53,159 INFO L175 Difference]: Start difference. First operand has 72 places, 32 transitions, 170 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:24:53,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 45 transitions, 282 flow [2024-06-27 23:24:53,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 45 transitions, 260 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:53,161 INFO L231 Difference]: Finished difference. Result has 68 places, 26 transitions, 131 flow [2024-06-27 23:24:53,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=131, PETRI_PLACES=68, PETRI_TRANSITIONS=26} [2024-06-27 23:24:53,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 23:24:53,161 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 26 transitions, 131 flow [2024-06-27 23:24:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:53,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:53,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:53,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:24:53,162 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:53,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1640329525, now seen corresponding path program 13 times [2024-06-27 23:24:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951695916] [2024-06-27 23:24:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:53,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:55,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:55,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951695916] [2024-06-27 23:24:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951695916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:55,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:55,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409456145] [2024-06-27 23:24:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:55,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:24:55,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 26 transitions, 131 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:55,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:55,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:24:55,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:56,142 INFO L124 PetriNetUnfolderBase]: 43/110 cut-off events. [2024-06-27 23:24:56,143 INFO L125 PetriNetUnfolderBase]: For 1741/1741 co-relation queries the response was YES. [2024-06-27 23:24:56,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 110 events. 43/110 cut-off events. For 1741/1741 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 278 event pairs, 13 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 372. Up to 44 conditions per place. [2024-06-27 23:24:56,143 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 16 selfloop transitions, 6 changer transitions 13/38 dead transitions. [2024-06-27 23:24:56,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 38 transitions, 227 flow [2024-06-27 23:24:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:24:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:24:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:24:56,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:24:56,144 INFO L175 Difference]: Start difference. First operand has 68 places, 26 transitions, 131 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:24:56,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 38 transitions, 227 flow [2024-06-27 23:24:56,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 38 transitions, 207 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:24:56,145 INFO L231 Difference]: Finished difference. Result has 58 places, 21 transitions, 102 flow [2024-06-27 23:24:56,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=11, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=21} [2024-06-27 23:24:56,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-27 23:24:56,145 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 21 transitions, 102 flow [2024-06-27 23:24:56,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:56,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:56,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:24:56,146 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:24:56,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash -24298485, now seen corresponding path program 14 times [2024-06-27 23:24:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111913420] [2024-06-27 23:24:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111913420] [2024-06-27 23:24:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111913420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:58,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:24:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926838054] [2024-06-27 23:24:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:24:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:24:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:24:58,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:24:58,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 21 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:58,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:58,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:24:58,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:59,031 INFO L124 PetriNetUnfolderBase]: 19/56 cut-off events. [2024-06-27 23:24:59,031 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2024-06-27 23:24:59,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 56 events. 19/56 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 6/62 useless extension candidates. Maximal degree in co-relation 146. Up to 24 conditions per place. [2024-06-27 23:24:59,031 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-27 23:24:59,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 28 transitions, 142 flow [2024-06-27 23:24:59,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:24:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:24:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-27 23:24:59,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-27 23:24:59,032 INFO L175 Difference]: Start difference. First operand has 58 places, 21 transitions, 102 flow. Second operand 12 states and 110 transitions. [2024-06-27 23:24:59,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 28 transitions, 142 flow [2024-06-27 23:24:59,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 28 transitions, 112 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-27 23:24:59,033 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-27 23:24:59,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-27 23:24:59,033 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 23:24:59,033 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-27 23:24:59,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:59,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:24:59,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:24:59,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:24:59,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:24:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:24:59,036 INFO L445 BasicCegarLoop]: Path program histogram: [20, 17, 16, 14, 10, 9, 9, 7, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:59,039 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:24:59,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:24:59,041 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:24:59,041 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:24:59,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:24:59 BasicIcfg [2024-06-27 23:24:59,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:24:59,042 INFO L158 Benchmark]: Toolchain (without parser) took 339777.80ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 92.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 195.8MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 151.0MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.39ms. Allocated memory is still 151.0MB. Free memory was 91.7MB in the beginning and 61.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.87ms. Allocated memory is still 151.0MB. Free memory was 61.4MB in the beginning and 57.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: Boogie Preprocessor took 48.39ms. Allocated memory is still 151.0MB. Free memory was 57.7MB in the beginning and 54.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,043 INFO L158 Benchmark]: RCFGBuilder took 708.21ms. Allocated memory is still 151.0MB. Free memory was 54.0MB in the beginning and 68.9MB in the end (delta: -15.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,044 INFO L158 Benchmark]: TraceAbstraction took 338504.66ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 68.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 171.8MB. Max. memory is 16.1GB. [2024-06-27 23:24:59,045 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 0.18ms. Allocated memory is still 151.0MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.39ms. Allocated memory is still 151.0MB. Free memory was 91.7MB in the beginning and 61.4MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.87ms. Allocated memory is still 151.0MB. Free memory was 61.4MB in the beginning and 57.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.39ms. Allocated memory is still 151.0MB. Free memory was 57.7MB in the beginning and 54.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 708.21ms. Allocated memory is still 151.0MB. Free memory was 54.0MB in the beginning and 68.9MB in the end (delta: -15.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 338504.66ms. Allocated memory was 151.0MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 68.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 171.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 824]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 825]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 338.4s, OverallIterations: 138, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 71.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6922 SdHoareTripleChecker+Valid, 38.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5742 mSDsluCounter, 1883 SdHoareTripleChecker+Invalid, 33.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1472 mSDsCounter, 1316 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52227 IncrementalHoareTripleChecker+Invalid, 53543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1316 mSolverCounterUnsat, 411 mSDtfsCounter, 52227 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1379 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 56.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1805occurred in iteration=52, InterpolantAutomatonStates: 1285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 263.2s InterpolantComputationTime, 2133 NumberOfCodeBlocks, 2133 NumberOfCodeBlocksAsserted, 138 NumberOfCheckSat, 1995 ConstructedInterpolants, 0 QuantifiedInterpolants, 125599 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 138 InterpolantComputations, 138 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 23:24:59,259 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-06-27 23:24:59,270 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 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE