./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.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/mix000.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/mix000.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix000.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 23:05:28,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:05:28,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:05:28,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:05:28,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:05:28,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:05:28,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:05:28,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:05:28,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:05:28,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:05:28,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:05:28,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:05:28,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:05:28,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:05:28,711 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:05:28,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:05:28,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:05:28,712 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:05:28,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:05:28,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:05:28,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:05:28,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:05:28,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:05:28,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:05:28,714 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:05:28,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:05:28,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:05:28,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:05:28,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:05:28,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:05:28,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:05:28,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:05:28,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:28,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:05:28,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:05:28,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:05:28,717 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:05:28,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:05:28,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:05:28,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:05:28,718 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:05:28,718 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:05:28,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:05:28,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:05:28,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:05:28,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:05:28,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:05:28,900 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:05:28,900 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:05:28,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix000.opt.yml/witness.yml [2024-06-27 23:05:28,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:05:28,961 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:05:28,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 23:05:29,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:05:30,197 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:05:30,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-27 23:05:30,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d4f76bec/cc57cc65c7d9401aaf697609f859b0c3/FLAGab7bd5f64 [2024-06-27 23:05:30,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d4f76bec/cc57cc65c7d9401aaf697609f859b0c3 [2024-06-27 23:05:30,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:05:30,223 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:05:30,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:30,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:05:30,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:05:30,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:28" (1/2) ... [2024-06-27 23:05:30,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2982167 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:30, skipping insertion in model container [2024-06-27 23:05:30,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:28" (1/2) ... [2024-06-27 23:05:30,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1621a24c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:30, skipping insertion in model container [2024-06-27 23:05:30,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:30" (2/2) ... [2024-06-27 23:05:30,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2982167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30, skipping insertion in model container [2024-06-27 23:05:30,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:30" (2/2) ... [2024-06-27 23:05:30,241 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:05:30,263 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:05:30,265 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (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_p0_EBX) - (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_p0_EAX) - (long long )__unbuffered_p1_EBX >= 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 23:05:30,265 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (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_p0_EBX) - (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_p0_EAX) - (long long )__unbuffered_p1_EBX >= 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 23:05:30,265 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:05:30,266 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 23:05:30,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:05:30,672 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:30,688 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:05:30,829 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:30,856 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:05:30,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30 WrapperNode [2024-06-27 23:05:30,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:30,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:30,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:05:30,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:05:30,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,926 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-27 23:05:30,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:30,927 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:05:30,927 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:05:30,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:05:30,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,983 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 23:05:30,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:30,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:31,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:05:31,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:05:31,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:05:31,004 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:05:31,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (1/1) ... [2024-06-27 23:05:31,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:31,025 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 23:05:31,042 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 23:05:31,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:05:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:05:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:05:31,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:05:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:05:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:05:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:05:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:05:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:05:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:05:31,058 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 23:05:31,182 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:05:31,183 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:05:31,447 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:05:31,447 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:05:31,595 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:05:31,595 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:05:31,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:31 BoogieIcfgContainer [2024-06-27 23:05:31,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:05:31,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:05:31,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:05:31,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:05:31,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:28" (1/4) ... [2024-06-27 23:05:31,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef41fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:05:31, skipping insertion in model container [2024-06-27 23:05:31,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:05:30" (2/4) ... [2024-06-27 23:05:31,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef41fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:31, skipping insertion in model container [2024-06-27 23:05:31,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:30" (3/4) ... [2024-06-27 23:05:31,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef41fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:31, skipping insertion in model container [2024-06-27 23:05:31,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:31" (4/4) ... [2024-06-27 23:05:31,607 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-27 23:05:31,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:05:31,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:05:31,620 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:05:31,659 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:05:31,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:05:31,700 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 23:05:31,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:05:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:05:31,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 23:05:31,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 23:05:31,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:05:31,715 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;@47a90bb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:05:31,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:05:31,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:05:31,718 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:05:31,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:05:31,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:31,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:05:31,719 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 23:05:31,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 362681797, now seen corresponding path program 1 times [2024-06-27 23:05:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049844903] [2024-06-27 23:05:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049844903] [2024-06-27 23:05:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049844903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:05:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065153410] [2024-06-27 23:05:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:32,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-27 23:05:32,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:32,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:32,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-27 23:05:32,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:32,950 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-27 23:05:32,951 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:05:32,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1019 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-27 23:05:32,954 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 23:05:32,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-27 23:05:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-27 23:05:32,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-27 23:05:32,965 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-27 23:05:32,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-27 23:05:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:32,968 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 23:05:32,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 23:05:32,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 23:05:32,972 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 23:05:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:32,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:32,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:05:32,973 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 23:05:32,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash 644883556, now seen corresponding path program 1 times [2024-06-27 23:05:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32265343] [2024-06-27 23:05:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:32,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:33,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:33,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32265343] [2024-06-27 23:05:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32265343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:33,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:33,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:05:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414644761] [2024-06-27 23:05:33,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:05:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:05:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:05:33,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:33,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 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 23:05:33,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:33,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:33,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:33,973 INFO L124 PetriNetUnfolderBase]: 186/341 cut-off events. [2024-06-27 23:05:33,973 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-27 23:05:33,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 341 events. 186/341 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1272 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-27 23:05:33,976 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 23:05:33,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-27 23:05:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:05:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:05:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-27 23:05:33,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-27 23:05:33,977 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-27 23:05:33,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-27 23:05:33,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:05:33,979 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 23:05:33,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 23:05:33,980 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 23:05:33,980 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 23:05:33,980 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 23:05:33,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:33,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:33,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:05:33,981 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 23:05:33,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1483445320, now seen corresponding path program 1 times [2024-06-27 23:05:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374375413] [2024-06-27 23:05:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:34,850 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 23:05:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:34,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374375413] [2024-06-27 23:05:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374375413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:34,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:34,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:34,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164645331] [2024-06-27 23:05:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:34,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:34,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:34,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 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 23:05:34,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:34,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:34,990 INFO L124 PetriNetUnfolderBase]: 183/336 cut-off events. [2024-06-27 23:05:34,990 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-27 23:05:34,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 336 events. 183/336 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1243 event pairs, 73 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 843. Up to 305 conditions per place. [2024-06-27 23:05:34,993 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-27 23:05:34,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 207 flow [2024-06-27 23:05:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:05:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:05:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-27 23:05:34,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2024-06-27 23:05:34,995 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 84 transitions. [2024-06-27 23:05:34,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 207 flow [2024-06-27 23:05:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 198 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:34,997 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-27 23:05:34,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 23:05:34,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-27 23:05:34,997 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-27 23:05:34,998 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 23:05:34,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:34,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:34,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:05:34,998 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 23:05:34,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:34,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1507186961, now seen corresponding path program 1 times [2024-06-27 23:05:34,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010397167] [2024-06-27 23:05:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:34,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:36,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010397167] [2024-06-27 23:05:36,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010397167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:36,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:36,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:36,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43412225] [2024-06-27 23:05:36,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:36,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:36,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:36,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:36,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 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 23:05:36,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:36,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:36,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:36,617 INFO L124 PetriNetUnfolderBase]: 180/331 cut-off events. [2024-06-27 23:05:36,617 INFO L125 PetriNetUnfolderBase]: For 332/332 co-relation queries the response was YES. [2024-06-27 23:05:36,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 331 events. 180/331 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1211 event pairs, 52 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 910. Up to 291 conditions per place. [2024-06-27 23:05:36,620 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-06-27 23:05:36,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 255 flow [2024-06-27 23:05:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:05:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:05:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 23:05:36,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-27 23:05:36,625 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 99 transitions. [2024-06-27 23:05:36,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 255 flow [2024-06-27 23:05:36,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 240 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:36,628 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 143 flow [2024-06-27 23:05:36,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-06-27 23:05:36,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-27 23:05:36,629 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 143 flow [2024-06-27 23:05:36,630 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 23:05:36,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:36,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:36,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:05:36,631 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 23:05:36,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -104928358, now seen corresponding path program 1 times [2024-06-27 23:05:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013523196] [2024-06-27 23:05:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:37,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013523196] [2024-06-27 23:05:37,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013523196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:37,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:37,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668751050] [2024-06-27 23:05:37,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:37,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:37,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:37,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:37,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:37,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:37,557 INFO L124 PetriNetUnfolderBase]: 137/283 cut-off events. [2024-06-27 23:05:37,557 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-06-27 23:05:37,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 283 events. 137/283 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1102 event pairs, 42 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 816. Up to 243 conditions per place. [2024-06-27 23:05:37,559 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 25 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-27 23:05:37,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 235 flow [2024-06-27 23:05:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:05:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:05:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 23:05:37,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44623655913978494 [2024-06-27 23:05:37,561 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 143 flow. Second operand 6 states and 83 transitions. [2024-06-27 23:05:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 235 flow [2024-06-27 23:05:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 212 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:05:37,563 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 166 flow [2024-06-27 23:05:37,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-27 23:05:37,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-27 23:05:37,564 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 166 flow [2024-06-27 23:05:37,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:37,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:37,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:37,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:05:37,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:37,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1894897058, now seen corresponding path program 1 times [2024-06-27 23:05:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:37,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795640113] [2024-06-27 23:05:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:37,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:39,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795640113] [2024-06-27 23:05:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795640113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:39,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:39,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369149371] [2024-06-27 23:05:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:39,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:39,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:39,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:39,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:39,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:39,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:39,251 INFO L124 PetriNetUnfolderBase]: 174/320 cut-off events. [2024-06-27 23:05:39,251 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-06-27 23:05:39,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 320 events. 174/320 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1145 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 998. Up to 262 conditions per place. [2024-06-27 23:05:39,255 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-27 23:05:39,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 298 flow [2024-06-27 23:05:39,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-27 23:05:39,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-27 23:05:39,265 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 166 flow. Second operand 7 states and 109 transitions. [2024-06-27 23:05:39,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 298 flow [2024-06-27 23:05:39,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 285 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:39,267 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 169 flow [2024-06-27 23:05:39,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=169, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-06-27 23:05:39,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-27 23:05:39,268 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 169 flow [2024-06-27 23:05:39,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:39,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:39,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:39,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:05:39,269 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 23:05:39,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1042189699, now seen corresponding path program 1 times [2024-06-27 23:05:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:39,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838635458] [2024-06-27 23:05:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838635458] [2024-06-27 23:05:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838635458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:40,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:40,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116291341] [2024-06-27 23:05:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:40,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:05:40,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:40,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:40,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:05:40,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:40,732 INFO L124 PetriNetUnfolderBase]: 129/267 cut-off events. [2024-06-27 23:05:40,732 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-06-27 23:05:40,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 267 events. 129/267 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1004 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 850. Up to 223 conditions per place. [2024-06-27 23:05:40,734 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 26 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2024-06-27 23:05:40,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 263 flow [2024-06-27 23:05:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:05:40,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2024-06-27 23:05:40,735 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 169 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:05:40,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 263 flow [2024-06-27 23:05:40,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 235 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:05:40,737 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 178 flow [2024-06-27 23:05:40,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-06-27 23:05:40,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-27 23:05:40,738 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 178 flow [2024-06-27 23:05:40,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:40,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:40,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:40,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:05:40,739 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 23:05:40,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash -761076105, now seen corresponding path program 1 times [2024-06-27 23:05:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998113311] [2024-06-27 23:05:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:40,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:41,549 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 23:05:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998113311] [2024-06-27 23:05:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998113311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:41,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686124852] [2024-06-27 23:05:41,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:41,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:41,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 178 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 23:05:41,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:41,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:41,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:41,811 INFO L124 PetriNetUnfolderBase]: 175/324 cut-off events. [2024-06-27 23:05:41,811 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2024-06-27 23:05:41,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 324 events. 175/324 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1162 event pairs, 44 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1093. Up to 296 conditions per place. [2024-06-27 23:05:41,813 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-27 23:05:41,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 312 flow [2024-06-27 23:05:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 23:05:41,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 23:05:41,814 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 178 flow. Second operand 7 states and 85 transitions. [2024-06-27 23:05:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 312 flow [2024-06-27 23:05:41,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 291 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:05:41,817 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 226 flow [2024-06-27 23:05:41,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-27 23:05:41,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-27 23:05:41,817 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 226 flow [2024-06-27 23:05:41,818 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 23:05:41,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:41,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:41,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:05:41,818 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 23:05:41,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1904147891, now seen corresponding path program 2 times [2024-06-27 23:05:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597286011] [2024-06-27 23:05:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597286011] [2024-06-27 23:05:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597286011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182527984] [2024-06-27 23:05:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:42,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:42,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 226 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 23:05:42,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:42,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:42,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:42,947 INFO L124 PetriNetUnfolderBase]: 178/329 cut-off events. [2024-06-27 23:05:42,947 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2024-06-27 23:05:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 329 events. 178/329 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1189 event pairs, 46 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 1181. Up to 291 conditions per place. [2024-06-27 23:05:42,949 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2024-06-27 23:05:42,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 378 flow [2024-06-27 23:05:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 23:05:42,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-27 23:05:42,950 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 226 flow. Second operand 7 states and 86 transitions. [2024-06-27 23:05:42,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 378 flow [2024-06-27 23:05:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 362 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:42,953 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 279 flow [2024-06-27 23:05:42,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 23:05:42,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-27 23:05:42,953 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 279 flow [2024-06-27 23:05:42,954 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 23:05:42,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:42,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:42,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:05:42,954 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 23:05:42,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:42,955 INFO L85 PathProgramCache]: Analyzing trace with hash 480439225, now seen corresponding path program 3 times [2024-06-27 23:05:42,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:42,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400867686] [2024-06-27 23:05:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:42,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400867686] [2024-06-27 23:05:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400867686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:43,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:43,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468571706] [2024-06-27 23:05:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:43,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:43,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:43,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 279 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 23:05:43,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:43,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:43,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:43,913 INFO L124 PetriNetUnfolderBase]: 176/326 cut-off events. [2024-06-27 23:05:43,914 INFO L125 PetriNetUnfolderBase]: For 1535/1535 co-relation queries the response was YES. [2024-06-27 23:05:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 326 events. 176/326 cut-off events. For 1535/1535 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1163 event pairs, 43 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1233. Up to 298 conditions per place. [2024-06-27 23:05:43,916 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-27 23:05:43,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 407 flow [2024-06-27 23:05:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:05:43,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-27 23:05:43,917 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 279 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:05:43,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 407 flow [2024-06-27 23:05:43,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 384 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:43,921 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 287 flow [2024-06-27 23:05:43,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-27 23:05:43,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-27 23:05:43,924 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 287 flow [2024-06-27 23:05:43,924 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 23:05:43,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:43,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:43,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:05:43,925 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 23:05:43,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1106670159, now seen corresponding path program 1 times [2024-06-27 23:05:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783138544] [2024-06-27 23:05:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:43,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:44,813 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 23:05:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783138544] [2024-06-27 23:05:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783138544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:44,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726273916] [2024-06-27 23:05:44,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:44,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:44,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:44,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:44,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:44,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 287 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 23:05:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:45,135 INFO L124 PetriNetUnfolderBase]: 190/354 cut-off events. [2024-06-27 23:05:45,135 INFO L125 PetriNetUnfolderBase]: For 1970/1970 co-relation queries the response was YES. [2024-06-27 23:05:45,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 354 events. 190/354 cut-off events. For 1970/1970 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1334 event pairs, 51 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1368. Up to 291 conditions per place. [2024-06-27 23:05:45,137 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2024-06-27 23:05:45,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 483 flow [2024-06-27 23:05:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:05:45,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2024-06-27 23:05:45,138 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 287 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:05:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 483 flow [2024-06-27 23:05:45,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 436 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:05:45,141 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 340 flow [2024-06-27 23:05:45,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-27 23:05:45,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-27 23:05:45,142 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 340 flow [2024-06-27 23:05:45,142 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 23:05:45,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:45,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:05:45,143 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 23:05:45,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520212, now seen corresponding path program 1 times [2024-06-27 23:05:45,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:45,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465838039] [2024-06-27 23:05:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465838039] [2024-06-27 23:05:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465838039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688680726] [2024-06-27 23:05:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:46,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:46,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:46,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 340 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 23:05:46,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:46,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:46,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:46,652 INFO L124 PetriNetUnfolderBase]: 193/359 cut-off events. [2024-06-27 23:05:46,653 INFO L125 PetriNetUnfolderBase]: For 2234/2236 co-relation queries the response was YES. [2024-06-27 23:05:46,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1509 conditions, 359 events. 193/359 cut-off events. For 2234/2236 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 49 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 1480. Up to 324 conditions per place. [2024-06-27 23:05:46,655 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 15 changer transitions 0/63 dead transitions. [2024-06-27 23:05:46,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 488 flow [2024-06-27 23:05:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:05:46,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 23:05:46,656 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 340 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:05:46,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 488 flow [2024-06-27 23:05:46,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 461 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:46,660 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 362 flow [2024-06-27 23:05:46,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-27 23:05:46,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 23:05:46,662 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 362 flow [2024-06-27 23:05:46,662 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 23:05:46,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:46,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:46,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:05:46,663 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 23:05:46,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:46,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520429, now seen corresponding path program 2 times [2024-06-27 23:05:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:46,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280802994] [2024-06-27 23:05:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280802994] [2024-06-27 23:05:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280802994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:47,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:47,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:47,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723184260] [2024-06-27 23:05:47,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:47,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:47,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 362 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 23:05:47,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:47,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:47,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:47,879 INFO L124 PetriNetUnfolderBase]: 196/365 cut-off events. [2024-06-27 23:05:47,879 INFO L125 PetriNetUnfolderBase]: For 2680/2680 co-relation queries the response was YES. [2024-06-27 23:05:47,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 365 events. 196/365 cut-off events. For 2680/2680 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1387 event pairs, 40 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1550. Up to 312 conditions per place. [2024-06-27 23:05:47,881 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2024-06-27 23:05:47,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 551 flow [2024-06-27 23:05:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:05:47,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-27 23:05:47,882 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 362 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:05:47,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 551 flow [2024-06-27 23:05:47,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 518 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:05:47,885 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 432 flow [2024-06-27 23:05:47,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-27 23:05:47,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-27 23:05:47,886 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 432 flow [2024-06-27 23:05:47,886 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 23:05:47,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:47,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:05:47,887 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 23:05:47,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash 816700436, now seen corresponding path program 2 times [2024-06-27 23:05:47,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:47,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739737941] [2024-06-27 23:05:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739737941] [2024-06-27 23:05:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739737941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:49,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:49,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:05:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481473522] [2024-06-27 23:05:49,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:05:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:05:49,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:05:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 432 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 23:05:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:49,815 INFO L124 PetriNetUnfolderBase]: 199/369 cut-off events. [2024-06-27 23:05:49,815 INFO L125 PetriNetUnfolderBase]: For 3161/3161 co-relation queries the response was YES. [2024-06-27 23:05:49,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 369 events. 199/369 cut-off events. For 3161/3161 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1400 event pairs, 41 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1655. Up to 313 conditions per place. [2024-06-27 23:05:49,818 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 24 changer transitions 0/74 dead transitions. [2024-06-27 23:05:49,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 648 flow [2024-06-27 23:05:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:05:49,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 23:05:49,819 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 432 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:05:49,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 648 flow [2024-06-27 23:05:49,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 620 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:49,823 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 504 flow [2024-06-27 23:05:49,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-27 23:05:49,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-27 23:05:49,824 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 504 flow [2024-06-27 23:05:49,824 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 23:05:49,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:49,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:49,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:05:49,824 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 23:05:49,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash 816692996, now seen corresponding path program 3 times [2024-06-27 23:05:49,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:49,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621914954] [2024-06-27 23:05:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621914954] [2024-06-27 23:05:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621914954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:05:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836304676] [2024-06-27 23:05:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:05:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:05:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:05:51,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:51,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 504 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 23:05:51,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:51,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:51,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:51,553 INFO L124 PetriNetUnfolderBase]: 202/374 cut-off events. [2024-06-27 23:05:51,553 INFO L125 PetriNetUnfolderBase]: For 3715/3715 co-relation queries the response was YES. [2024-06-27 23:05:51,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 374 events. 202/374 cut-off events. For 3715/3715 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1403 event pairs, 41 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1771. Up to 330 conditions per place. [2024-06-27 23:05:51,555 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-27 23:05:51,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 682 flow [2024-06-27 23:05:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:05:51,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 23:05:51,556 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 504 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:05:51,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 682 flow [2024-06-27 23:05:51,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 75 transitions, 645 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:05:51,561 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 536 flow [2024-06-27 23:05:51,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-06-27 23:05:51,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-27 23:05:51,561 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 536 flow [2024-06-27 23:05:51,561 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 23:05:51,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:51,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:51,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:05:51,562 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 23:05:51,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1780489741, now seen corresponding path program 3 times [2024-06-27 23:05:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:51,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427875767] [2024-06-27 23:05:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:51,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:52,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427875767] [2024-06-27 23:05:52,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427875767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:52,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:52,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:52,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507303924] [2024-06-27 23:05:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:52,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:52,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:52,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:52,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 536 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 23:05:52,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:52,738 INFO L124 PetriNetUnfolderBase]: 210/387 cut-off events. [2024-06-27 23:05:52,738 INFO L125 PetriNetUnfolderBase]: For 4408/4408 co-relation queries the response was YES. [2024-06-27 23:05:52,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 387 events. 210/387 cut-off events. For 4408/4408 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1488 event pairs, 56 based on Foata normal form. 1/387 useless extension candidates. Maximal degree in co-relation 1905. Up to 296 conditions per place. [2024-06-27 23:05:52,742 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 45 selfloop transitions, 33 changer transitions 0/81 dead transitions. [2024-06-27 23:05:52,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 784 flow [2024-06-27 23:05:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:05:52,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377880184331797 [2024-06-27 23:05:52,745 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 536 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:05:52,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 784 flow [2024-06-27 23:05:52,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 739 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:05:52,749 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 634 flow [2024-06-27 23:05:52,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-27 23:05:52,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-27 23:05:52,750 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 634 flow [2024-06-27 23:05:52,750 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 23:05:52,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:52,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:52,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:05:52,751 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 23:05:52,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -131269143, now seen corresponding path program 4 times [2024-06-27 23:05:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993125734] [2024-06-27 23:05:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993125734] [2024-06-27 23:05:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993125734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:53,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118994046] [2024-06-27 23:05:53,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:53,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:53,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 634 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 23:05:53,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:53,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:53,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:53,714 INFO L124 PetriNetUnfolderBase]: 217/399 cut-off events. [2024-06-27 23:05:53,715 INFO L125 PetriNetUnfolderBase]: For 5160/5160 co-relation queries the response was YES. [2024-06-27 23:05:53,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 399 events. 217/399 cut-off events. For 5160/5160 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1530 event pairs, 48 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2099. Up to 351 conditions per place. [2024-06-27 23:05:53,717 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 20 changer transitions 0/90 dead transitions. [2024-06-27 23:05:53,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 882 flow [2024-06-27 23:05:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:05:53,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-27 23:05:53,719 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 634 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:05:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 882 flow [2024-06-27 23:05:53,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 841 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:53,724 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 684 flow [2024-06-27 23:05:53,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-06-27 23:05:53,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-27 23:05:53,725 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 684 flow [2024-06-27 23:05:53,725 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 23:05:53,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:53,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:05:53,725 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 23:05:53,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1538052669, now seen corresponding path program 5 times [2024-06-27 23:05:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:53,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61288584] [2024-06-27 23:05:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61288584] [2024-06-27 23:05:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61288584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983074853] [2024-06-27 23:05:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:54,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:54,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:54,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 684 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 23:05:54,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:54,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:54,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:54,769 INFO L124 PetriNetUnfolderBase]: 227/419 cut-off events. [2024-06-27 23:05:54,771 INFO L125 PetriNetUnfolderBase]: For 5899/5899 co-relation queries the response was YES. [2024-06-27 23:05:54,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 419 events. 227/419 cut-off events. For 5899/5899 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1652 event pairs, 47 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 2267. Up to 346 conditions per place. [2024-06-27 23:05:54,775 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 24 changer transitions 0/94 dead transitions. [2024-06-27 23:05:54,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 950 flow [2024-06-27 23:05:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:05:54,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 23:05:54,776 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 684 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:05:54,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 950 flow [2024-06-27 23:05:54,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 893 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:05:54,783 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 742 flow [2024-06-27 23:05:54,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-27 23:05:54,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-27 23:05:54,786 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 742 flow [2024-06-27 23:05:54,787 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 23:05:54,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:54,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:54,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:05:54,787 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 23:05:54,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1538058249, now seen corresponding path program 6 times [2024-06-27 23:05:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588039631] [2024-06-27 23:05:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:55,599 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 23:05:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588039631] [2024-06-27 23:05:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588039631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:05:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064999317] [2024-06-27 23:05:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:55,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:55,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:05:55,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:55,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 742 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 23:05:55,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:55,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:55,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:55,973 INFO L124 PetriNetUnfolderBase]: 225/416 cut-off events. [2024-06-27 23:05:55,973 INFO L125 PetriNetUnfolderBase]: For 6308/6308 co-relation queries the response was YES. [2024-06-27 23:05:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 416 events. 225/416 cut-off events. For 6308/6308 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1626 event pairs, 50 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 2268. Up to 356 conditions per place. [2024-06-27 23:05:55,976 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-27 23:05:55,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 991 flow [2024-06-27 23:05:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:05:55,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-27 23:05:55,979 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 742 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:05:55,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 991 flow [2024-06-27 23:05:55,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 920 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:05:55,994 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 776 flow [2024-06-27 23:05:55,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2024-06-27 23:05:55,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-27 23:05:55,995 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 776 flow [2024-06-27 23:05:55,995 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 23:05:55,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:55,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:05:55,995 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 23:05:55,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1538058466, now seen corresponding path program 4 times [2024-06-27 23:05:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966525013] [2024-06-27 23:05:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966525013] [2024-06-27 23:05:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966525013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:05:57,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966151137] [2024-06-27 23:05:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:05:57,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:05:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:05:57,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:57,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 776 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 23:05:57,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:57,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:57,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:57,554 INFO L124 PetriNetUnfolderBase]: 223/413 cut-off events. [2024-06-27 23:05:57,554 INFO L125 PetriNetUnfolderBase]: For 6675/6675 co-relation queries the response was YES. [2024-06-27 23:05:57,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 413 events. 223/413 cut-off events. For 6675/6675 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1633 event pairs, 49 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 2258. Up to 375 conditions per place. [2024-06-27 23:05:57,557 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 78 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-06-27 23:05:57,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 997 flow [2024-06-27 23:05:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:05:57,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-27 23:05:57,559 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 776 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:05:57,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 997 flow [2024-06-27 23:05:57,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 938 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:05:57,565 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 763 flow [2024-06-27 23:05:57,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-27 23:05:57,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 23:05:57,566 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 763 flow [2024-06-27 23:05:57,566 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 23:05:57,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:57,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:57,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:05:57,567 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 23:05:57,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1254297096, now seen corresponding path program 1 times [2024-06-27 23:05:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145686598] [2024-06-27 23:05:57,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:57,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145686598] [2024-06-27 23:05:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145686598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:05:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400333266] [2024-06-27 23:05:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:05:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:05:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:05:58,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:05:58,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 763 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 23:05:58,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:58,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:05:58,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:59,144 INFO L124 PetriNetUnfolderBase]: 226/420 cut-off events. [2024-06-27 23:05:59,145 INFO L125 PetriNetUnfolderBase]: For 7154/7154 co-relation queries the response was YES. [2024-06-27 23:05:59,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 420 events. 226/420 cut-off events. For 7154/7154 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1679 event pairs, 54 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2290. Up to 342 conditions per place. [2024-06-27 23:05:59,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2024-06-27 23:05:59,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 97 transitions, 997 flow [2024-06-27 23:05:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:05:59,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 23:05:59,153 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 763 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:05:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 97 transitions, 997 flow [2024-06-27 23:05:59,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 962 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:05:59,162 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 813 flow [2024-06-27 23:05:59,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=813, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2024-06-27 23:05:59,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 23:05:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 813 flow [2024-06-27 23:05:59,163 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 23:05:59,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:59,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:59,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:05:59,164 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 23:05:59,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1254296910, now seen corresponding path program 1 times [2024-06-27 23:05:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58892292] [2024-06-27 23:05:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58892292] [2024-06-27 23:06:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58892292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67031043] [2024-06-27 23:06:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:00,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:00,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:00,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 813 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 23:06:00,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:00,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:00,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:00,844 INFO L124 PetriNetUnfolderBase]: 232/432 cut-off events. [2024-06-27 23:06:00,844 INFO L125 PetriNetUnfolderBase]: For 8041/8041 co-relation queries the response was YES. [2024-06-27 23:06:00,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 432 events. 232/432 cut-off events. For 8041/8041 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1751 event pairs, 43 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2414. Up to 349 conditions per place. [2024-06-27 23:06:00,847 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 28 changer transitions 0/100 dead transitions. [2024-06-27 23:06:00,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 100 transitions, 1057 flow [2024-06-27 23:06:00,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:06:00,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 23:06:00,850 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 813 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:06:00,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 100 transitions, 1057 flow [2024-06-27 23:06:00,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 986 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:00,860 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 837 flow [2024-06-27 23:06:00,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-06-27 23:06:00,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-27 23:06:00,861 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 837 flow [2024-06-27 23:06:00,861 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 23:06:00,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:00,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:00,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:06:00,861 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 23:06:00,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1249648522, now seen corresponding path program 1 times [2024-06-27 23:06:00,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:00,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488188476] [2024-06-27 23:06:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:02,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:02,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488188476] [2024-06-27 23:06:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488188476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:02,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:02,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586396280] [2024-06-27 23:06:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:02,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:02,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:02,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 837 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 23:06:02,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:02,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:02,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:03,042 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-27 23:06:03,042 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-06-27 23:06:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 437 events. 235/437 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1771 event pairs, 37 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2505. Up to 384 conditions per place. [2024-06-27 23:06:03,045 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-06-27 23:06:03,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 1071 flow [2024-06-27 23:06:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:06:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:06:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:06:03,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 23:06:03,046 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 837 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:06:03,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 1071 flow [2024-06-27 23:06:03,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 1000 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:03,057 INFO L231 Difference]: Finished difference. Result has 106 places, 93 transitions, 830 flow [2024-06-27 23:06:03,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=830, PETRI_PLACES=106, PETRI_TRANSITIONS=93} [2024-06-27 23:06:03,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-27 23:06:03,058 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 93 transitions, 830 flow [2024-06-27 23:06:03,058 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 23:06:03,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:03,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:03,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:06:03,059 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 23:06:03,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1249648770, now seen corresponding path program 2 times [2024-06-27 23:06:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:03,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718167171] [2024-06-27 23:06:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:04,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:04,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718167171] [2024-06-27 23:06:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718167171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777806726] [2024-06-27 23:06:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:04,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:04,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:04,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:04,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 93 transitions, 830 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 23:06:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:04,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:04,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:04,688 INFO L124 PetriNetUnfolderBase]: 243/448 cut-off events. [2024-06-27 23:06:04,688 INFO L125 PetriNetUnfolderBase]: For 9551/9551 co-relation queries the response was YES. [2024-06-27 23:06:04,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2668 conditions, 448 events. 243/448 cut-off events. For 9551/9551 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1812 event pairs, 44 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2619. Up to 351 conditions per place. [2024-06-27 23:06:04,691 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 36 changer transitions 0/106 dead transitions. [2024-06-27 23:06:04,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 106 transitions, 1144 flow [2024-06-27 23:06:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:06:04,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:06:04,693 INFO L175 Difference]: Start difference. First operand has 106 places, 93 transitions, 830 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:06:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 106 transitions, 1144 flow [2024-06-27 23:06:04,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 1098 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:04,703 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 905 flow [2024-06-27 23:06:04,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-27 23:06:04,704 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-27 23:06:04,704 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 905 flow [2024-06-27 23:06:04,704 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 23:06:04,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:04,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:06:04,704 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 23:06:04,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1249655466, now seen corresponding path program 2 times [2024-06-27 23:06:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:04,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265660019] [2024-06-27 23:06:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:04,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:05,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265660019] [2024-06-27 23:06:05,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265660019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:05,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042785339] [2024-06-27 23:06:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:05,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:05,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:05,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 905 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 23:06:05,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:06,275 INFO L124 PetriNetUnfolderBase]: 246/457 cut-off events. [2024-06-27 23:06:06,276 INFO L125 PetriNetUnfolderBase]: For 10392/10392 co-relation queries the response was YES. [2024-06-27 23:06:06,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 457 events. 246/457 cut-off events. For 10392/10392 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1895 event pairs, 42 based on Foata normal form. 1/457 useless extension candidates. Maximal degree in co-relation 2746. Up to 366 conditions per place. [2024-06-27 23:06:06,280 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 31 changer transitions 0/107 dead transitions. [2024-06-27 23:06:06,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1161 flow [2024-06-27 23:06:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:06:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:06:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:06:06,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-27 23:06:06,281 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 905 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:06:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1161 flow [2024-06-27 23:06:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 1107 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:06,293 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 950 flow [2024-06-27 23:06:06,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=950, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-06-27 23:06:06,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-27 23:06:06,294 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 950 flow [2024-06-27 23:06:06,294 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 23:06:06,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:06,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:06:06,294 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 23:06:06,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1249655280, now seen corresponding path program 3 times [2024-06-27 23:06:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:06,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602378810] [2024-06-27 23:06:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:06,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602378810] [2024-06-27 23:06:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602378810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:07,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285849986] [2024-06-27 23:06:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:07,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:07,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 950 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 23:06:07,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:07,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:07,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:07,927 INFO L124 PetriNetUnfolderBase]: 244/452 cut-off events. [2024-06-27 23:06:07,927 INFO L125 PetriNetUnfolderBase]: For 10982/10982 co-relation queries the response was YES. [2024-06-27 23:06:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2844 conditions, 452 events. 244/452 cut-off events. For 10982/10982 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1853 event pairs, 44 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2792. Up to 366 conditions per place. [2024-06-27 23:06:07,931 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 30 changer transitions 0/107 dead transitions. [2024-06-27 23:06:07,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 107 transitions, 1178 flow [2024-06-27 23:06:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:06:07,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-27 23:06:07,949 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 950 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:06:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 107 transitions, 1178 flow [2024-06-27 23:06:07,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 107 transitions, 1089 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:07,962 INFO L231 Difference]: Finished difference. Result has 115 places, 99 transitions, 926 flow [2024-06-27 23:06:07,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=926, PETRI_PLACES=115, PETRI_TRANSITIONS=99} [2024-06-27 23:06:07,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 23:06:07,963 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 99 transitions, 926 flow [2024-06-27 23:06:07,963 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 23:06:07,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:07,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:07,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:06:07,963 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 23:06:07,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:07,967 INFO L85 PathProgramCache]: Analyzing trace with hash 639400888, now seen corresponding path program 4 times [2024-06-27 23:06:07,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:07,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884151511] [2024-06-27 23:06:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:07,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884151511] [2024-06-27 23:06:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884151511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597977777] [2024-06-27 23:06:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:09,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:09,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 99 transitions, 926 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 23:06:09,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:09,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:09,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:09,983 INFO L124 PetriNetUnfolderBase]: 252/465 cut-off events. [2024-06-27 23:06:09,983 INFO L125 PetriNetUnfolderBase]: For 12137/12137 co-relation queries the response was YES. [2024-06-27 23:06:09,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2951 conditions, 465 events. 252/465 cut-off events. For 12137/12137 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1917 event pairs, 50 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 2898. Up to 344 conditions per place. [2024-06-27 23:06:10,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 48 changer transitions 0/112 dead transitions. [2024-06-27 23:06:10,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 1316 flow [2024-06-27 23:06:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:06:10,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:06:10,004 INFO L175 Difference]: Start difference. First operand has 115 places, 99 transitions, 926 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:06:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 112 transitions, 1316 flow [2024-06-27 23:06:10,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 112 transitions, 1240 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:06:10,031 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 1003 flow [2024-06-27 23:06:10,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1003, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2024-06-27 23:06:10,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-27 23:06:10,032 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 1003 flow [2024-06-27 23:06:10,032 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 23:06:10,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:10,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:06:10,033 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 23:06:10,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash -452319368, now seen corresponding path program 2 times [2024-06-27 23:06:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:10,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588392111] [2024-06-27 23:06:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:11,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:11,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588392111] [2024-06-27 23:06:11,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588392111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:11,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:11,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:06:11,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664705626] [2024-06-27 23:06:11,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:11,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:06:11,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:11,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:06:11,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:06:11,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 1003 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 23:06:11,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:11,999 INFO L124 PetriNetUnfolderBase]: 255/470 cut-off events. [2024-06-27 23:06:11,999 INFO L125 PetriNetUnfolderBase]: For 13206/13206 co-relation queries the response was YES. [2024-06-27 23:06:12,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3063 conditions, 470 events. 255/470 cut-off events. For 13206/13206 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1923 event pairs, 42 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 3009. Up to 416 conditions per place. [2024-06-27 23:06:12,002 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 90 selfloop transitions, 19 changer transitions 0/112 dead transitions. [2024-06-27 23:06:12,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 1255 flow [2024-06-27 23:06:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:06:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:06:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:06:12,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423963133640553 [2024-06-27 23:06:12,003 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 1003 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:06:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 1255 flow [2024-06-27 23:06:12,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 1172 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:12,018 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 985 flow [2024-06-27 23:06:12,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=985, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2024-06-27 23:06:12,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-27 23:06:12,019 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 985 flow [2024-06-27 23:06:12,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 23:06:12,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:12,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:12,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:06:12,020 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 23:06:12,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash -452326312, now seen corresponding path program 3 times [2024-06-27 23:06:12,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:12,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741610304] [2024-06-27 23:06:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:13,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:13,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741610304] [2024-06-27 23:06:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741610304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:13,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721026168] [2024-06-27 23:06:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:13,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:13,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:13,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:13,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:13,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 985 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 23:06:13,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:13,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:13,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:13,528 INFO L124 PetriNetUnfolderBase]: 258/477 cut-off events. [2024-06-27 23:06:13,528 INFO L125 PetriNetUnfolderBase]: For 13933/13933 co-relation queries the response was YES. [2024-06-27 23:06:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 477 events. 258/477 cut-off events. For 13933/13933 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1987 event pairs, 50 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 3098. Up to 347 conditions per place. [2024-06-27 23:06:13,531 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 46 changer transitions 0/117 dead transitions. [2024-06-27 23:06:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 117 transitions, 1351 flow [2024-06-27 23:06:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:06:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:06:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:06:13,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-27 23:06:13,553 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 985 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:06:13,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 117 transitions, 1351 flow [2024-06-27 23:06:13,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 1302 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:13,568 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 1101 flow [2024-06-27 23:06:13,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1101, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2024-06-27 23:06:13,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-27 23:06:13,570 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 1101 flow [2024-06-27 23:06:13,570 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 23:06:13,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:13,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:06:13,571 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 23:06:13,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2126071382, now seen corresponding path program 5 times [2024-06-27 23:06:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:13,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630214484] [2024-06-27 23:06:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630214484] [2024-06-27 23:06:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630214484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814635835] [2024-06-27 23:06:14,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:14,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:14,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 1101 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 23:06:14,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:14,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:14,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:15,217 INFO L124 PetriNetUnfolderBase]: 256/476 cut-off events. [2024-06-27 23:06:15,217 INFO L125 PetriNetUnfolderBase]: For 14425/14425 co-relation queries the response was YES. [2024-06-27 23:06:15,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 476 events. 256/476 cut-off events. For 14425/14425 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2004 event pairs, 48 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 3153. Up to 358 conditions per place. [2024-06-27 23:06:15,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 45 changer transitions 0/117 dead transitions. [2024-06-27 23:06:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1405 flow [2024-06-27 23:06:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:06:15,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 23:06:15,221 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 1101 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:06:15,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1405 flow [2024-06-27 23:06:15,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 117 transitions, 1333 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:06:15,235 INFO L231 Difference]: Finished difference. Result has 126 places, 109 transitions, 1124 flow [2024-06-27 23:06:15,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=126, PETRI_TRANSITIONS=109} [2024-06-27 23:06:15,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-27 23:06:15,236 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 109 transitions, 1124 flow [2024-06-27 23:06:15,236 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 23:06:15,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:15,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:15,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:06:15,236 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 23:06:15,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash -443748488, now seen corresponding path program 3 times [2024-06-27 23:06:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877836354] [2024-06-27 23:06:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877836354] [2024-06-27 23:06:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877836354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:17,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677850548] [2024-06-27 23:06:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:17,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:17,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:17,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:17,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:17,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 109 transitions, 1124 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 23:06:17,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:17,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:17,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:18,359 INFO L124 PetriNetUnfolderBase]: 259/481 cut-off events. [2024-06-27 23:06:18,360 INFO L125 PetriNetUnfolderBase]: For 15296/15296 co-relation queries the response was YES. [2024-06-27 23:06:18,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 481 events. 259/481 cut-off events. For 15296/15296 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2026 event pairs, 49 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 3239. Up to 440 conditions per place. [2024-06-27 23:06:18,363 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 103 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2024-06-27 23:06:18,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 120 transitions, 1408 flow [2024-06-27 23:06:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:06:18,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:06:18,364 INFO L175 Difference]: Start difference. First operand has 126 places, 109 transitions, 1124 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:06:18,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 120 transitions, 1408 flow [2024-06-27 23:06:18,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 120 transitions, 1313 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:06:18,381 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1105 flow [2024-06-27 23:06:18,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1105, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-06-27 23:06:18,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-27 23:06:18,382 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1105 flow [2024-06-27 23:06:18,382 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 23:06:18,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:18,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:06:18,382 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 23:06:18,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash -444045406, now seen corresponding path program 6 times [2024-06-27 23:06:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110448882] [2024-06-27 23:06:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110448882] [2024-06-27 23:06:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110448882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:20,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:20,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61296077] [2024-06-27 23:06:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:20,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:20,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:20,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:20,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:20,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1105 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 23:06:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:20,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:20,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:20,751 INFO L124 PetriNetUnfolderBase]: 267/494 cut-off events. [2024-06-27 23:06:20,751 INFO L125 PetriNetUnfolderBase]: For 16472/16472 co-relation queries the response was YES. [2024-06-27 23:06:20,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 494 events. 267/494 cut-off events. For 16472/16472 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2096 event pairs, 50 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 3353. Up to 326 conditions per place. [2024-06-27 23:06:20,754 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 64 changer transitions 0/127 dead transitions. [2024-06-27 23:06:20,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 1567 flow [2024-06-27 23:06:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:06:20,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:06:20,756 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1105 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:06:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 1567 flow [2024-06-27 23:06:20,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 1514 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:20,776 INFO L231 Difference]: Finished difference. Result has 133 places, 118 transitions, 1293 flow [2024-06-27 23:06:20,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1293, PETRI_PLACES=133, PETRI_TRANSITIONS=118} [2024-06-27 23:06:20,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-27 23:06:20,777 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 118 transitions, 1293 flow [2024-06-27 23:06:20,777 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 23:06:20,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:20,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:06:20,778 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 23:06:20,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2117790414, now seen corresponding path program 4 times [2024-06-27 23:06:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:20,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861135574] [2024-06-27 23:06:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:22,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:22,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861135574] [2024-06-27 23:06:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861135574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:22,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:06:22,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292773085] [2024-06-27 23:06:22,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:06:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:06:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:06:22,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:22,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 118 transitions, 1293 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 23:06:22,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:22,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:22,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:22,496 INFO L124 PetriNetUnfolderBase]: 265/491 cut-off events. [2024-06-27 23:06:22,496 INFO L125 PetriNetUnfolderBase]: For 17573/17573 co-relation queries the response was YES. [2024-06-27 23:06:22,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 491 events. 265/491 cut-off events. For 17573/17573 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2072 event pairs, 42 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 3513. Up to 407 conditions per place. [2024-06-27 23:06:22,499 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 94 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-27 23:06:22,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 127 transitions, 1583 flow [2024-06-27 23:06:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:06:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:06:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-27 23:06:22,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45622119815668205 [2024-06-27 23:06:22,501 INFO L175 Difference]: Start difference. First operand has 133 places, 118 transitions, 1293 flow. Second operand 7 states and 99 transitions. [2024-06-27 23:06:22,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 127 transitions, 1583 flow [2024-06-27 23:06:22,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 1489 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:22,523 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1294 flow [2024-06-27 23:06:22,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-27 23:06:22,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 23:06:22,524 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1294 flow [2024-06-27 23:06:22,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 23:06:22,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:22,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:22,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:06:22,525 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 23:06:22,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1803526668, now seen corresponding path program 7 times [2024-06-27 23:06:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271837872] [2024-06-27 23:06:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:22,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:23,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271837872] [2024-06-27 23:06:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271837872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:23,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:23,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997372445] [2024-06-27 23:06:23,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:23,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:23,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1294 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 23:06:23,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:23,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:23,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:24,088 INFO L124 PetriNetUnfolderBase]: 271/499 cut-off events. [2024-06-27 23:06:24,089 INFO L125 PetriNetUnfolderBase]: For 18638/18638 co-relation queries the response was YES. [2024-06-27 23:06:24,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 499 events. 271/499 cut-off events. For 18638/18638 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2082 event pairs, 38 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 3608. Up to 414 conditions per place. [2024-06-27 23:06:24,092 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-27 23:06:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1637 flow [2024-06-27 23:06:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:06:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:06:24,094 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1294 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:06:24,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1637 flow [2024-06-27 23:06:24,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1558 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:06:24,119 INFO L231 Difference]: Finished difference. Result has 139 places, 123 transitions, 1331 flow [2024-06-27 23:06:24,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1331, PETRI_PLACES=139, PETRI_TRANSITIONS=123} [2024-06-27 23:06:24,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 23:06:24,120 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 123 transitions, 1331 flow [2024-06-27 23:06:24,120 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 23:06:24,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:24,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:24,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:06:24,120 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 23:06:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1562642716, now seen corresponding path program 4 times [2024-06-27 23:06:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780899578] [2024-06-27 23:06:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:24,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780899578] [2024-06-27 23:06:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780899578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:24,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:24,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820249188] [2024-06-27 23:06:24,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:24,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:24,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:24,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:25,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:25,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 123 transitions, 1331 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 23:06:25,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:25,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:25,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:25,288 INFO L124 PetriNetUnfolderBase]: 278/514 cut-off events. [2024-06-27 23:06:25,288 INFO L125 PetriNetUnfolderBase]: For 19587/19587 co-relation queries the response was YES. [2024-06-27 23:06:25,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 514 events. 278/514 cut-off events. For 19587/19587 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2199 event pairs, 39 based on Foata normal form. 1/514 useless extension candidates. Maximal degree in co-relation 3739. Up to 433 conditions per place. [2024-06-27 23:06:25,291 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 29 changer transitions 0/142 dead transitions. [2024-06-27 23:06:25,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 142 transitions, 1715 flow [2024-06-27 23:06:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:06:25,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:06:25,293 INFO L175 Difference]: Start difference. First operand has 139 places, 123 transitions, 1331 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:06:25,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 142 transitions, 1715 flow [2024-06-27 23:06:25,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 1628 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:25,319 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1377 flow [2024-06-27 23:06:25,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1377, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2024-06-27 23:06:25,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 23:06:25,320 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1377 flow [2024-06-27 23:06:25,320 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 23:06:25,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:25,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:06:25,321 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 23:06:25,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:25,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1479605636, now seen corresponding path program 5 times [2024-06-27 23:06:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:25,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926091092] [2024-06-27 23:06:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:26,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:26,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926091092] [2024-06-27 23:06:26,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926091092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:26,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:26,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535257] [2024-06-27 23:06:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:26,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:26,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:26,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:26,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:26,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1377 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 23:06:26,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:26,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:26,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:26,682 INFO L124 PetriNetUnfolderBase]: 276/511 cut-off events. [2024-06-27 23:06:26,682 INFO L125 PetriNetUnfolderBase]: For 19716/19716 co-relation queries the response was YES. [2024-06-27 23:06:26,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 511 events. 276/511 cut-off events. For 19716/19716 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2174 event pairs, 40 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 3679. Up to 430 conditions per place. [2024-06-27 23:06:26,685 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 27 changer transitions 0/141 dead transitions. [2024-06-27 23:06:26,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 141 transitions, 1691 flow [2024-06-27 23:06:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:06:26,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:06:26,686 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1377 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:06:26,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 141 transitions, 1691 flow [2024-06-27 23:06:26,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 1607 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:26,718 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 1352 flow [2024-06-27 23:06:26,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2024-06-27 23:06:26,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-27 23:06:26,718 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 1352 flow [2024-06-27 23:06:26,719 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 23:06:26,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:26,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:06:26,719 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 23:06:26,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1479468740, now seen corresponding path program 8 times [2024-06-27 23:06:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129143729] [2024-06-27 23:06:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:27,880 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 23:06:27,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129143729] [2024-06-27 23:06:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129143729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:27,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:27,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:27,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531721459] [2024-06-27 23:06:27,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:27,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:27,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:27,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 1352 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 23:06:27,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:27,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:27,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:28,245 INFO L124 PetriNetUnfolderBase]: 277/511 cut-off events. [2024-06-27 23:06:28,245 INFO L125 PetriNetUnfolderBase]: For 20960/20960 co-relation queries the response was YES. [2024-06-27 23:06:28,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 511 events. 277/511 cut-off events. For 20960/20960 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2169 event pairs, 39 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 3662. Up to 418 conditions per place. [2024-06-27 23:06:28,265 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-27 23:06:28,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1700 flow [2024-06-27 23:06:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:06:28,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:06:28,273 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 1352 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:06:28,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1700 flow [2024-06-27 23:06:28,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 1598 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:28,301 INFO L231 Difference]: Finished difference. Result has 145 places, 129 transitions, 1364 flow [2024-06-27 23:06:28,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1364, PETRI_PLACES=145, PETRI_TRANSITIONS=129} [2024-06-27 23:06:28,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-27 23:06:28,302 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 129 transitions, 1364 flow [2024-06-27 23:06:28,302 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 23:06:28,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:28,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:28,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:06:28,303 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 23:06:28,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:28,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1479461486, now seen corresponding path program 6 times [2024-06-27 23:06:28,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:28,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431746807] [2024-06-27 23:06:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:28,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431746807] [2024-06-27 23:06:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431746807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:29,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391911893] [2024-06-27 23:06:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:29,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:29,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 129 transitions, 1364 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 23:06:29,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:29,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:29,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:29,638 INFO L124 PetriNetUnfolderBase]: 280/521 cut-off events. [2024-06-27 23:06:29,638 INFO L125 PetriNetUnfolderBase]: For 21178/21178 co-relation queries the response was YES. [2024-06-27 23:06:29,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3799 conditions, 521 events. 280/521 cut-off events. For 21178/21178 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2258 event pairs, 37 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 3730. Up to 428 conditions per place. [2024-06-27 23:06:29,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 32 changer transitions 0/144 dead transitions. [2024-06-27 23:06:29,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 144 transitions, 1716 flow [2024-06-27 23:06:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:06:29,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:06:29,643 INFO L175 Difference]: Start difference. First operand has 145 places, 129 transitions, 1364 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:06:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 144 transitions, 1716 flow [2024-06-27 23:06:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1618 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:29,674 INFO L231 Difference]: Finished difference. Result has 147 places, 131 transitions, 1375 flow [2024-06-27 23:06:29,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=147, PETRI_TRANSITIONS=131} [2024-06-27 23:06:29,674 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 23:06:29,674 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 131 transitions, 1375 flow [2024-06-27 23:06:29,675 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 23:06:29,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:29,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:06:29,676 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 23:06:29,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash 98057588, now seen corresponding path program 7 times [2024-06-27 23:06:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:29,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391055398] [2024-06-27 23:06:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391055398] [2024-06-27 23:06:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391055398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:30,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:30,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:30,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135421374] [2024-06-27 23:06:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:30,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:30,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:30,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:30,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 131 transitions, 1375 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 23:06:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:30,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:31,054 INFO L124 PetriNetUnfolderBase]: 283/528 cut-off events. [2024-06-27 23:06:31,054 INFO L125 PetriNetUnfolderBase]: For 22237/22237 co-relation queries the response was YES. [2024-06-27 23:06:31,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 528 events. 283/528 cut-off events. For 22237/22237 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2306 event pairs, 37 based on Foata normal form. 1/528 useless extension candidates. Maximal degree in co-relation 3768. Up to 436 conditions per place. [2024-06-27 23:06:31,074 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-06-27 23:06:31,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 145 transitions, 1731 flow [2024-06-27 23:06:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:06:31,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:06:31,079 INFO L175 Difference]: Start difference. First operand has 147 places, 131 transitions, 1375 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:06:31,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 145 transitions, 1731 flow [2024-06-27 23:06:31,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 145 transitions, 1642 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:31,146 INFO L231 Difference]: Finished difference. Result has 149 places, 133 transitions, 1393 flow [2024-06-27 23:06:31,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1393, PETRI_PLACES=149, PETRI_TRANSITIONS=133} [2024-06-27 23:06:31,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 23:06:31,148 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 133 transitions, 1393 flow [2024-06-27 23:06:31,148 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 23:06:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:31,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:31,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:06:31,148 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 23:06:31,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash 102705914, now seen corresponding path program 9 times [2024-06-27 23:06:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:31,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123289732] [2024-06-27 23:06:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:32,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:32,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123289732] [2024-06-27 23:06:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123289732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498666152] [2024-06-27 23:06:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:32,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:32,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:32,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 133 transitions, 1393 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 23:06:32,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:32,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:32,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:32,869 INFO L124 PetriNetUnfolderBase]: 286/533 cut-off events. [2024-06-27 23:06:32,869 INFO L125 PetriNetUnfolderBase]: For 23382/23382 co-relation queries the response was YES. [2024-06-27 23:06:32,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 533 events. 286/533 cut-off events. For 23382/23382 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2343 event pairs, 41 based on Foata normal form. 1/533 useless extension candidates. Maximal degree in co-relation 3820. Up to 405 conditions per place. [2024-06-27 23:06:32,872 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 47 changer transitions 0/147 dead transitions. [2024-06-27 23:06:32,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 1829 flow [2024-06-27 23:06:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:06:32,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:06:32,874 INFO L175 Difference]: Start difference. First operand has 149 places, 133 transitions, 1393 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:06:32,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 147 transitions, 1829 flow [2024-06-27 23:06:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1742 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:32,904 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1445 flow [2024-06-27 23:06:32,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1445, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-27 23:06:32,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-27 23:06:32,914 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1445 flow [2024-06-27 23:06:32,914 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 23:06:32,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:32,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:32,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:06:32,914 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 23:06:32,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 435166778, now seen corresponding path program 8 times [2024-06-27 23:06:32,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:32,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487520420] [2024-06-27 23:06:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:33,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:33,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487520420] [2024-06-27 23:06:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487520420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:33,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:33,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:06:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419844333] [2024-06-27 23:06:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:33,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:06:33,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:33,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:06:33,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:06:34,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:34,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1445 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 23:06:34,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:34,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:34,336 INFO L124 PetriNetUnfolderBase]: 284/530 cut-off events. [2024-06-27 23:06:34,336 INFO L125 PetriNetUnfolderBase]: For 23555/23555 co-relation queries the response was YES. [2024-06-27 23:06:34,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 530 events. 284/530 cut-off events. For 23555/23555 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2316 event pairs, 41 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 3797. Up to 417 conditions per place. [2024-06-27 23:06:34,340 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 104 selfloop transitions, 39 changer transitions 0/146 dead transitions. [2024-06-27 23:06:34,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1759 flow [2024-06-27 23:06:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:06:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:06:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:06:34,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-06-27 23:06:34,349 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1445 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:06:34,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1759 flow [2024-06-27 23:06:34,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1546 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:06:34,380 INFO L231 Difference]: Finished difference. Result has 150 places, 135 transitions, 1315 flow [2024-06-27 23:06:34,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=150, PETRI_TRANSITIONS=135} [2024-06-27 23:06:34,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-27 23:06:34,381 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 135 transitions, 1315 flow [2024-06-27 23:06:34,381 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 23:06:34,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:34,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:34,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:06:34,382 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 23:06:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash 102699404, now seen corresponding path program 10 times [2024-06-27 23:06:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983308423] [2024-06-27 23:06:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:35,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:35,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983308423] [2024-06-27 23:06:35,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983308423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:35,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533078715] [2024-06-27 23:06:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:35,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:35,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:35,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:35,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 135 transitions, 1315 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 23:06:35,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:35,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:35,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:36,018 INFO L124 PetriNetUnfolderBase]: 282/527 cut-off events. [2024-06-27 23:06:36,018 INFO L125 PetriNetUnfolderBase]: For 23657/23657 co-relation queries the response was YES. [2024-06-27 23:06:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3638 conditions, 527 events. 282/527 cut-off events. For 23657/23657 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2309 event pairs, 41 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 3568. Up to 420 conditions per place. [2024-06-27 23:06:36,021 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 38 changer transitions 0/146 dead transitions. [2024-06-27 23:06:36,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1629 flow [2024-06-27 23:06:36,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:06:36,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:06:36,023 INFO L175 Difference]: Start difference. First operand has 150 places, 135 transitions, 1315 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:06:36,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1629 flow [2024-06-27 23:06:36,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 1441 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:06:36,053 INFO L231 Difference]: Finished difference. Result has 151 places, 135 transitions, 1208 flow [2024-06-27 23:06:36,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1208, PETRI_PLACES=151, PETRI_TRANSITIONS=135} [2024-06-27 23:06:36,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-27 23:06:36,053 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 135 transitions, 1208 flow [2024-06-27 23:06:36,054 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 23:06:36,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:36,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:36,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:06:36,054 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 23:06:36,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:36,055 INFO L85 PathProgramCache]: Analyzing trace with hash -443737576, now seen corresponding path program 1 times [2024-06-27 23:06:36,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:36,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63236082] [2024-06-27 23:06:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:36,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:39,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63236082] [2024-06-27 23:06:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63236082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:39,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631389648] [2024-06-27 23:06:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:39,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:39,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:39,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:39,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 135 transitions, 1208 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 23:06:39,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:39,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:39,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:40,338 INFO L124 PetriNetUnfolderBase]: 262/501 cut-off events. [2024-06-27 23:06:40,338 INFO L125 PetriNetUnfolderBase]: For 23960/23961 co-relation queries the response was YES. [2024-06-27 23:06:40,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 501 events. 262/501 cut-off events. For 23960/23961 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2240 event pairs, 55 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 3249. Up to 418 conditions per place. [2024-06-27 23:06:40,341 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2024-06-27 23:06:40,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 1480 flow [2024-06-27 23:06:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:06:40,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-27 23:06:40,342 INFO L175 Difference]: Start difference. First operand has 151 places, 135 transitions, 1208 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:06:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 1480 flow [2024-06-27 23:06:40,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 144 transitions, 1380 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:06:40,370 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1142 flow [2024-06-27 23:06:40,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1142, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-27 23:06:40,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-27 23:06:40,371 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1142 flow [2024-06-27 23:06:40,371 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 23:06:40,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:40,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:40,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:06:40,372 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 23:06:40,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1780442605, now seen corresponding path program 1 times [2024-06-27 23:06:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049095334] [2024-06-27 23:06:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:41,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:41,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049095334] [2024-06-27 23:06:41,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049095334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:41,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:41,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:41,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151467755] [2024-06-27 23:06:41,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:41,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:42,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:42,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1142 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 23:06:42,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:42,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:42,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:42,514 INFO L124 PetriNetUnfolderBase]: 287/538 cut-off events. [2024-06-27 23:06:42,514 INFO L125 PetriNetUnfolderBase]: For 24660/24660 co-relation queries the response was YES. [2024-06-27 23:06:42,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 538 events. 287/538 cut-off events. For 24660/24660 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2385 event pairs, 45 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 3475. Up to 430 conditions per place. [2024-06-27 23:06:42,517 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 35 changer transitions 0/150 dead transitions. [2024-06-27 23:06:42,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 150 transitions, 1602 flow [2024-06-27 23:06:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:06:42,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:06:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:06:42,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:06:42,518 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1142 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:06:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 150 transitions, 1602 flow [2024-06-27 23:06:42,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 150 transitions, 1547 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:06:42,553 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 1218 flow [2024-06-27 23:06:42,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1218, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2024-06-27 23:06:42,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-27 23:06:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 1218 flow [2024-06-27 23:06:42,554 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 23:06:42,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:06:42,554 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 23:06:42,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1780442822, now seen corresponding path program 1 times [2024-06-27 23:06:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058765642] [2024-06-27 23:06:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058765642] [2024-06-27 23:06:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058765642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:43,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:43,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:43,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474474983] [2024-06-27 23:06:43,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:43,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:43,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:44,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:44,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 1218 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 23:06:44,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:44,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:44,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:44,370 INFO L124 PetriNetUnfolderBase]: 293/548 cut-off events. [2024-06-27 23:06:44,370 INFO L125 PetriNetUnfolderBase]: For 26905/26905 co-relation queries the response was YES. [2024-06-27 23:06:44,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 548 events. 293/548 cut-off events. For 26905/26905 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2423 event pairs, 29 based on Foata normal form. 2/549 useless extension candidates. Maximal degree in co-relation 3602. Up to 407 conditions per place. [2024-06-27 23:06:44,374 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 48 changer transitions 0/154 dead transitions. [2024-06-27 23:06:44,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 1592 flow [2024-06-27 23:06:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:06:44,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-27 23:06:44,377 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 1218 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:06:44,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 1592 flow [2024-06-27 23:06:44,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 154 transitions, 1529 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:44,417 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 1307 flow [2024-06-27 23:06:44,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2024-06-27 23:06:44,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-27 23:06:44,427 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 1307 flow [2024-06-27 23:06:44,427 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 23:06:44,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:44,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:06:44,428 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 23:06:44,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1641908875, now seen corresponding path program 2 times [2024-06-27 23:06:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61659911] [2024-06-27 23:06:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:46,229 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 23:06:46,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61659911] [2024-06-27 23:06:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61659911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46429279] [2024-06-27 23:06:46,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:46,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:46,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:46,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:46,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:46,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 1307 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 23:06:46,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:46,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:46,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:46,795 INFO L124 PetriNetUnfolderBase]: 291/547 cut-off events. [2024-06-27 23:06:46,796 INFO L125 PetriNetUnfolderBase]: For 25800/25800 co-relation queries the response was YES. [2024-06-27 23:06:46,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 547 events. 291/547 cut-off events. For 25800/25800 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2458 event pairs, 41 based on Foata normal form. 1/547 useless extension candidates. Maximal degree in co-relation 3679. Up to 447 conditions per place. [2024-06-27 23:06:46,799 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 31 changer transitions 0/152 dead transitions. [2024-06-27 23:06:46,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 1631 flow [2024-06-27 23:06:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:06:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:06:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:06:46,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:06:46,801 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 1307 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:06:46,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 1631 flow [2024-06-27 23:06:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 152 transitions, 1495 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:46,839 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 1238 flow [2024-06-27 23:06:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=149, 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=10, PETRI_FLOW=1238, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2024-06-27 23:06:46,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-27 23:06:46,840 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 1238 flow [2024-06-27 23:06:46,840 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 23:06:46,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:46,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:46,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:06:46,840 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 23:06:46,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1786006795, now seen corresponding path program 3 times [2024-06-27 23:06:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:46,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474761768] [2024-06-27 23:06:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:46,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:48,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:48,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474761768] [2024-06-27 23:06:48,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474761768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:48,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:48,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639125000] [2024-06-27 23:06:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:48,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:48,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 1238 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 23:06:48,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:48,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:48,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:49,030 INFO L124 PetriNetUnfolderBase]: 299/562 cut-off events. [2024-06-27 23:06:49,030 INFO L125 PetriNetUnfolderBase]: For 28744/28744 co-relation queries the response was YES. [2024-06-27 23:06:49,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 562 events. 299/562 cut-off events. For 28744/28744 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2526 event pairs, 36 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 3762. Up to 435 conditions per place. [2024-06-27 23:06:49,034 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 42 changer transitions 0/156 dead transitions. [2024-06-27 23:06:49,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1724 flow [2024-06-27 23:06:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:06:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:06:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:06:49,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:06:49,035 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 1238 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:06:49,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1724 flow [2024-06-27 23:06:49,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 156 transitions, 1649 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:06:49,087 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 1320 flow [2024-06-27 23:06:49,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2024-06-27 23:06:49,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-27 23:06:49,088 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 1320 flow [2024-06-27 23:06:49,088 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 23:06:49,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:49,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:06:49,089 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 23:06:49,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:49,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1786007012, now seen corresponding path program 2 times [2024-06-27 23:06:49,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:49,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544770156] [2024-06-27 23:06:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:50,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:50,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544770156] [2024-06-27 23:06:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544770156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:50,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359410514] [2024-06-27 23:06:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:50,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 1320 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 23:06:50,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:50,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:50,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:51,082 INFO L124 PetriNetUnfolderBase]: 322/599 cut-off events. [2024-06-27 23:06:51,083 INFO L125 PetriNetUnfolderBase]: For 34924/34924 co-relation queries the response was YES. [2024-06-27 23:06:51,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4354 conditions, 599 events. 322/599 cut-off events. For 34924/34924 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2724 event pairs, 33 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 4279. Up to 369 conditions per place. [2024-06-27 23:06:51,086 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 71 changer transitions 0/166 dead transitions. [2024-06-27 23:06:51,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 166 transitions, 1982 flow [2024-06-27 23:06:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:06:51,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:06:51,089 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 1320 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:06:51,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 166 transitions, 1982 flow [2024-06-27 23:06:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 166 transitions, 1911 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:51,145 INFO L231 Difference]: Finished difference. Result has 164 places, 153 transitions, 1544 flow [2024-06-27 23:06:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=164, PETRI_TRANSITIONS=153} [2024-06-27 23:06:51,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-27 23:06:51,146 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 153 transitions, 1544 flow [2024-06-27 23:06:51,146 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 23:06:51,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:06:51,146 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 23:06:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1786014452, now seen corresponding path program 3 times [2024-06-27 23:06:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102808116] [2024-06-27 23:06:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:52,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102808116] [2024-06-27 23:06:52,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102808116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:52,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:52,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027308376] [2024-06-27 23:06:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:52,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:52,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:52,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 153 transitions, 1544 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 23:06:52,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:52,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:52,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:53,166 INFO L124 PetriNetUnfolderBase]: 320/596 cut-off events. [2024-06-27 23:06:53,166 INFO L125 PetriNetUnfolderBase]: For 35439/35439 co-relation queries the response was YES. [2024-06-27 23:06:53,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 596 events. 320/596 cut-off events. For 35439/35439 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2712 event pairs, 33 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 4442. Up to 367 conditions per place. [2024-06-27 23:06:53,171 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 79 changer transitions 0/167 dead transitions. [2024-06-27 23:06:53,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 167 transitions, 2131 flow [2024-06-27 23:06:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:06:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:06:53,177 INFO L175 Difference]: Start difference. First operand has 164 places, 153 transitions, 1544 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:06:53,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 167 transitions, 2131 flow [2024-06-27 23:06:53,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 167 transitions, 2021 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:06:53,240 INFO L231 Difference]: Finished difference. Result has 170 places, 155 transitions, 1677 flow [2024-06-27 23:06:53,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1677, PETRI_PLACES=170, PETRI_TRANSITIONS=155} [2024-06-27 23:06:53,241 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 23:06:53,241 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 155 transitions, 1677 flow [2024-06-27 23:06:53,241 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 23:06:53,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:53,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:53,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:06:53,242 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 23:06:53,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash -84396955, now seen corresponding path program 1 times [2024-06-27 23:06:53,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:53,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458875156] [2024-06-27 23:06:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:53,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:55,424 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 23:06:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458875156] [2024-06-27 23:06:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458875156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:55,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:55,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:06:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200173487] [2024-06-27 23:06:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:06:55,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:55,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:06:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:06:55,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:06:55,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 155 transitions, 1677 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 23:06:55,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:55,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:06:55,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:55,904 INFO L124 PetriNetUnfolderBase]: 323/600 cut-off events. [2024-06-27 23:06:55,904 INFO L125 PetriNetUnfolderBase]: For 36918/36918 co-relation queries the response was YES. [2024-06-27 23:06:55,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 600 events. 323/600 cut-off events. For 36918/36918 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2722 event pairs, 34 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 4657. Up to 528 conditions per place. [2024-06-27 23:06:55,909 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 22 changer transitions 0/167 dead transitions. [2024-06-27 23:06:55,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 167 transitions, 2053 flow [2024-06-27 23:06:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:06:55,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-27 23:06:55,910 INFO L175 Difference]: Start difference. First operand has 170 places, 155 transitions, 1677 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:06:55,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 167 transitions, 2053 flow [2024-06-27 23:06:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 167 transitions, 1939 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:06:55,978 INFO L231 Difference]: Finished difference. Result has 173 places, 157 transitions, 1640 flow [2024-06-27 23:06:55,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1640, PETRI_PLACES=173, PETRI_TRANSITIONS=157} [2024-06-27 23:06:55,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-27 23:06:55,988 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 157 transitions, 1640 flow [2024-06-27 23:06:55,988 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 23:06:55,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:55,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:06:55,994 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 23:06:55,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1785804985, now seen corresponding path program 4 times [2024-06-27 23:06:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:55,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76733044] [2024-06-27 23:06:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:06:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:06:57,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:06:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76733044] [2024-06-27 23:06:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76733044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:06:57,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:06:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:06:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083576274] [2024-06-27 23:06:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:06:57,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:06:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:06:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:06:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:06:57,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:06:57,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 157 transitions, 1640 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 23:06:57,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:06:57,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:06:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:06:58,324 INFO L124 PetriNetUnfolderBase]: 326/606 cut-off events. [2024-06-27 23:06:58,325 INFO L125 PetriNetUnfolderBase]: For 38108/38108 co-relation queries the response was YES. [2024-06-27 23:06:58,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 606 events. 326/606 cut-off events. For 38108/38108 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2769 event pairs, 35 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4680. Up to 488 conditions per place. [2024-06-27 23:06:58,329 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 38 changer transitions 0/169 dead transitions. [2024-06-27 23:06:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 2138 flow [2024-06-27 23:06:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:06:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:06:58,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:06:58,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 23:06:58,331 INFO L175 Difference]: Start difference. First operand has 173 places, 157 transitions, 1640 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:06:58,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 2138 flow [2024-06-27 23:06:58,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 2067 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:06:58,400 INFO L231 Difference]: Finished difference. Result has 176 places, 159 transitions, 1702 flow [2024-06-27 23:06:58,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1702, PETRI_PLACES=176, PETRI_TRANSITIONS=159} [2024-06-27 23:06:58,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 23:06:58,401 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 159 transitions, 1702 flow [2024-06-27 23:06:58,401 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 23:06:58,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:06:58,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:06:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:06:58,402 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 23:06:58,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:06:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1785799405, now seen corresponding path program 5 times [2024-06-27 23:06:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:06:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055407092] [2024-06-27 23:06:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:06:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:06:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:00,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055407092] [2024-06-27 23:07:00,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055407092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:00,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:00,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:00,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953535698] [2024-06-27 23:07:00,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:00,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:00,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:00,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:00,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 159 transitions, 1702 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 23:07:00,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:00,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:00,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:00,670 INFO L124 PetriNetUnfolderBase]: 324/603 cut-off events. [2024-06-27 23:07:00,671 INFO L125 PetriNetUnfolderBase]: For 38005/38005 co-relation queries the response was YES. [2024-06-27 23:07:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 603 events. 324/603 cut-off events. For 38005/38005 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2776 event pairs, 40 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 4651. Up to 492 conditions per place. [2024-06-27 23:07:00,675 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 35 changer transitions 0/168 dead transitions. [2024-06-27 23:07:00,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 168 transitions, 2054 flow [2024-06-27 23:07:00,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:00,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:07:00,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:07:00,676 INFO L175 Difference]: Start difference. First operand has 176 places, 159 transitions, 1702 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:07:00,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 168 transitions, 2054 flow [2024-06-27 23:07:00,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 168 transitions, 1936 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:00,736 INFO L231 Difference]: Finished difference. Result has 179 places, 159 transitions, 1659 flow [2024-06-27 23:07:00,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1659, PETRI_PLACES=179, PETRI_TRANSITIONS=159} [2024-06-27 23:07:00,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-27 23:07:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 159 transitions, 1659 flow [2024-06-27 23:07:00,737 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 23:07:00,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:00,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:07:00,737 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 23:07:00,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1785805202, now seen corresponding path program 4 times [2024-06-27 23:07:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394190572] [2024-06-27 23:07:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:02,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394190572] [2024-06-27 23:07:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394190572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:02,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331837809] [2024-06-27 23:07:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:02,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:02,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 159 transitions, 1659 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 23:07:02,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:02,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:02,559 INFO L124 PetriNetUnfolderBase]: 322/600 cut-off events. [2024-06-27 23:07:02,560 INFO L125 PetriNetUnfolderBase]: For 38299/38299 co-relation queries the response was YES. [2024-06-27 23:07:02,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 600 events. 322/600 cut-off events. For 38299/38299 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2741 event pairs, 32 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 4565. Up to 466 conditions per place. [2024-06-27 23:07:02,564 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 47 changer transitions 0/170 dead transitions. [2024-06-27 23:07:02,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 170 transitions, 2031 flow [2024-06-27 23:07:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:07:02,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-27 23:07:02,565 INFO L175 Difference]: Start difference. First operand has 179 places, 159 transitions, 1659 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:07:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 170 transitions, 2031 flow [2024-06-27 23:07:02,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 170 transitions, 1950 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:07:02,637 INFO L231 Difference]: Finished difference. Result has 179 places, 160 transitions, 1694 flow [2024-06-27 23:07:02,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1694, PETRI_PLACES=179, PETRI_TRANSITIONS=160} [2024-06-27 23:07:02,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-27 23:07:02,638 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 160 transitions, 1694 flow [2024-06-27 23:07:02,638 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 23:07:02,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:02,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:07:02,638 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 23:07:02,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1449591150, now seen corresponding path program 5 times [2024-06-27 23:07:02,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:02,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556021316] [2024-06-27 23:07:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:04,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556021316] [2024-06-27 23:07:04,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556021316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:04,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:04,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:04,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257270336] [2024-06-27 23:07:04,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:04,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:04,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:04,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 160 transitions, 1694 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 23:07:04,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:04,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:04,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:04,825 INFO L124 PetriNetUnfolderBase]: 348/642 cut-off events. [2024-06-27 23:07:04,825 INFO L125 PetriNetUnfolderBase]: For 46479/46479 co-relation queries the response was YES. [2024-06-27 23:07:04,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 642 events. 348/642 cut-off events. For 46479/46479 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2967 event pairs, 33 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 5107. Up to 342 conditions per place. [2024-06-27 23:07:04,830 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 105 selfloop transitions, 76 changer transitions 0/184 dead transitions. [2024-06-27 23:07:04,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 2586 flow [2024-06-27 23:07:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:07:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:07:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 23:07:04,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:07:04,832 INFO L175 Difference]: Start difference. First operand has 179 places, 160 transitions, 1694 flow. Second operand 8 states and 124 transitions. [2024-06-27 23:07:04,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 2586 flow [2024-06-27 23:07:04,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 184 transitions, 2478 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:04,919 INFO L231 Difference]: Finished difference. Result has 182 places, 169 transitions, 1922 flow [2024-06-27 23:07:04,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1922, PETRI_PLACES=182, PETRI_TRANSITIONS=169} [2024-06-27 23:07:04,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-27 23:07:04,919 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 169 transitions, 1922 flow [2024-06-27 23:07:04,919 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 23:07:04,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:04,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:04,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:07:04,920 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 23:07:04,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:04,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1449591367, now seen corresponding path program 6 times [2024-06-27 23:07:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332377937] [2024-06-27 23:07:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:04,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332377937] [2024-06-27 23:07:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332377937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737201643] [2024-06-27 23:07:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:07,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:07,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 169 transitions, 1922 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 23:07:07,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:07,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:07,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:07,918 INFO L124 PetriNetUnfolderBase]: 351/649 cut-off events. [2024-06-27 23:07:07,918 INFO L125 PetriNetUnfolderBase]: For 47166/47166 co-relation queries the response was YES. [2024-06-27 23:07:07,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5460 conditions, 649 events. 351/649 cut-off events. For 47166/47166 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3017 event pairs, 48 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 5372. Up to 399 conditions per place. [2024-06-27 23:07:07,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 88 changer transitions 0/182 dead transitions. [2024-06-27 23:07:07,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 182 transitions, 2492 flow [2024-06-27 23:07:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:07,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:07:07,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:07:07,925 INFO L175 Difference]: Start difference. First operand has 182 places, 169 transitions, 1922 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:07:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 182 transitions, 2492 flow [2024-06-27 23:07:08,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 182 transitions, 2418 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 23:07:08,013 INFO L231 Difference]: Finished difference. Result has 190 places, 173 transitions, 2117 flow [2024-06-27 23:07:08,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2117, PETRI_PLACES=190, PETRI_TRANSITIONS=173} [2024-06-27 23:07:08,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-27 23:07:08,013 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 173 transitions, 2117 flow [2024-06-27 23:07:08,014 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 23:07:08,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:08,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:07:08,014 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 23:07:08,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1483500277, now seen corresponding path program 7 times [2024-06-27 23:07:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247113112] [2024-06-27 23:07:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:10,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:10,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247113112] [2024-06-27 23:07:10,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247113112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:10,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:10,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576745775] [2024-06-27 23:07:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:10,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:10,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 173 transitions, 2117 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 23:07:10,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:10,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:10,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:10,878 INFO L124 PetriNetUnfolderBase]: 359/664 cut-off events. [2024-06-27 23:07:10,879 INFO L125 PetriNetUnfolderBase]: For 50867/50867 co-relation queries the response was YES. [2024-06-27 23:07:10,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5819 conditions, 664 events. 359/664 cut-off events. For 50867/50867 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3129 event pairs, 48 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 5728. Up to 512 conditions per place. [2024-06-27 23:07:10,884 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 55 changer transitions 0/186 dead transitions. [2024-06-27 23:07:10,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 186 transitions, 2705 flow [2024-06-27 23:07:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:07:10,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:07:10,886 INFO L175 Difference]: Start difference. First operand has 190 places, 173 transitions, 2117 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:07:10,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 186 transitions, 2705 flow [2024-06-27 23:07:10,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 186 transitions, 2587 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:07:10,997 INFO L231 Difference]: Finished difference. Result has 194 places, 177 transitions, 2210 flow [2024-06-27 23:07:10,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2210, PETRI_PLACES=194, PETRI_TRANSITIONS=177} [2024-06-27 23:07:10,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-27 23:07:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 177 transitions, 2210 flow [2024-06-27 23:07:10,998 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 23:07:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:07:10,999 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 23:07:10,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1137212283, now seen corresponding path program 8 times [2024-06-27 23:07:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217406148] [2024-06-27 23:07:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217406148] [2024-06-27 23:07:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217406148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125614686] [2024-06-27 23:07:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:12,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:12,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 177 transitions, 2210 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 23:07:12,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:12,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:12,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:13,124 INFO L124 PetriNetUnfolderBase]: 362/671 cut-off events. [2024-06-27 23:07:13,124 INFO L125 PetriNetUnfolderBase]: For 52995/52995 co-relation queries the response was YES. [2024-06-27 23:07:13,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 671 events. 362/671 cut-off events. For 52995/52995 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3149 event pairs, 37 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5853. Up to 512 conditions per place. [2024-06-27 23:07:13,129 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 56 changer transitions 0/187 dead transitions. [2024-06-27 23:07:13,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 187 transitions, 2644 flow [2024-06-27 23:07:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:07:13,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:07:13,131 INFO L175 Difference]: Start difference. First operand has 194 places, 177 transitions, 2210 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:07:13,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 187 transitions, 2644 flow [2024-06-27 23:07:13,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 2531 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:07:13,237 INFO L231 Difference]: Finished difference. Result has 197 places, 179 transitions, 2266 flow [2024-06-27 23:07:13,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2266, PETRI_PLACES=197, PETRI_TRANSITIONS=179} [2024-06-27 23:07:13,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-27 23:07:13,237 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 179 transitions, 2266 flow [2024-06-27 23:07:13,237 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 23:07:13,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:13,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:13,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:07:13,238 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 23:07:13,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1137004676, now seen corresponding path program 6 times [2024-06-27 23:07:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397407123] [2024-06-27 23:07:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:14,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:14,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397407123] [2024-06-27 23:07:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397407123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:14,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:14,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509752481] [2024-06-27 23:07:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:14,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:15,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:15,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 179 transitions, 2266 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 23:07:15,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:15,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:15,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:15,355 INFO L124 PetriNetUnfolderBase]: 370/684 cut-off events. [2024-06-27 23:07:15,355 INFO L125 PetriNetUnfolderBase]: For 56258/56258 co-relation queries the response was YES. [2024-06-27 23:07:15,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 684 events. 370/684 cut-off events. For 56258/56258 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3227 event pairs, 37 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 6078. Up to 523 conditions per place. [2024-06-27 23:07:15,360 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 53 changer transitions 0/195 dead transitions. [2024-06-27 23:07:15,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 195 transitions, 2999 flow [2024-06-27 23:07:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:07:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:07:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-27 23:07:15,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717741935483871 [2024-06-27 23:07:15,362 INFO L175 Difference]: Start difference. First operand has 197 places, 179 transitions, 2266 flow. Second operand 8 states and 117 transitions. [2024-06-27 23:07:15,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 195 transitions, 2999 flow [2024-06-27 23:07:15,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 195 transitions, 2850 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:15,467 INFO L231 Difference]: Finished difference. Result has 198 places, 185 transitions, 2331 flow [2024-06-27 23:07:15,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2331, PETRI_PLACES=198, PETRI_TRANSITIONS=185} [2024-06-27 23:07:15,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-27 23:07:15,468 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 185 transitions, 2331 flow [2024-06-27 23:07:15,468 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 23:07:15,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:15,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:15,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:07:15,469 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 23:07:15,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1456942800, now seen corresponding path program 7 times [2024-06-27 23:07:15,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70434976] [2024-06-27 23:07:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:15,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70434976] [2024-06-27 23:07:17,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70434976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:17,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:17,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346837848] [2024-06-27 23:07:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:17,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:17,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:17,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 185 transitions, 2331 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 23:07:17,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:17,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:17,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:17,649 INFO L124 PetriNetUnfolderBase]: 371/686 cut-off events. [2024-06-27 23:07:17,650 INFO L125 PetriNetUnfolderBase]: For 58166/58166 co-relation queries the response was YES. [2024-06-27 23:07:17,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 686 events. 371/686 cut-off events. For 58166/58166 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3235 event pairs, 37 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 6066. Up to 518 conditions per place. [2024-06-27 23:07:17,656 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-27 23:07:17,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 2777 flow [2024-06-27 23:07:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:17,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:07:17,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-27 23:07:17,657 INFO L175 Difference]: Start difference. First operand has 198 places, 185 transitions, 2331 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:07:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 2777 flow [2024-06-27 23:07:17,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 2671 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 23:07:17,781 INFO L231 Difference]: Finished difference. Result has 204 places, 187 transitions, 2395 flow [2024-06-27 23:07:17,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=204, PETRI_TRANSITIONS=187} [2024-06-27 23:07:17,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 23:07:17,781 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 187 transitions, 2395 flow [2024-06-27 23:07:17,781 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 23:07:17,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:17,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:17,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:07:17,782 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 23:07:17,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1483702087, now seen corresponding path program 9 times [2024-06-27 23:07:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265628404] [2024-06-27 23:07:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265628404] [2024-06-27 23:07:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265628404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:19,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44684829] [2024-06-27 23:07:19,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:19,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:19,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:19,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 187 transitions, 2395 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 23:07:19,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:19,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:19,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:20,440 INFO L124 PetriNetUnfolderBase]: 369/683 cut-off events. [2024-06-27 23:07:20,440 INFO L125 PetriNetUnfolderBase]: For 56424/56424 co-relation queries the response was YES. [2024-06-27 23:07:20,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 683 events. 369/683 cut-off events. For 56424/56424 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3233 event pairs, 37 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 6085. Up to 518 conditions per place. [2024-06-27 23:07:20,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 59 changer transitions 0/195 dead transitions. [2024-06-27 23:07:20,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 195 transitions, 2797 flow [2024-06-27 23:07:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:07:20,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:07:20,473 INFO L175 Difference]: Start difference. First operand has 204 places, 187 transitions, 2395 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:07:20,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 195 transitions, 2797 flow [2024-06-27 23:07:20,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 195 transitions, 2633 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:20,578 INFO L231 Difference]: Finished difference. Result has 207 places, 187 transitions, 2354 flow [2024-06-27 23:07:20,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2354, PETRI_PLACES=207, PETRI_TRANSITIONS=187} [2024-06-27 23:07:20,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 23:07:20,580 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 187 transitions, 2354 flow [2024-06-27 23:07:20,580 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 23:07:20,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:20,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:07:20,580 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 23:07:20,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1456733271, now seen corresponding path program 2 times [2024-06-27 23:07:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126667171] [2024-06-27 23:07:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126667171] [2024-06-27 23:07:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126667171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871531287] [2024-06-27 23:07:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:22,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:22,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:23,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:23,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 187 transitions, 2354 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 23:07:23,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:23,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:23,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:23,238 INFO L124 PetriNetUnfolderBase]: 367/679 cut-off events. [2024-06-27 23:07:23,238 INFO L125 PetriNetUnfolderBase]: For 55809/55809 co-relation queries the response was YES. [2024-06-27 23:07:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6084 conditions, 679 events. 367/679 cut-off events. For 55809/55809 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3200 event pairs, 44 based on Foata normal form. 1/679 useless extension candidates. Maximal degree in co-relation 5985. Up to 600 conditions per place. [2024-06-27 23:07:23,244 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 22 changer transitions 0/197 dead transitions. [2024-06-27 23:07:23,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2793 flow [2024-06-27 23:07:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:07:23,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:07:23,250 INFO L175 Difference]: Start difference. First operand has 207 places, 187 transitions, 2354 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:07:23,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2793 flow [2024-06-27 23:07:23,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 197 transitions, 2663 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:07:23,354 INFO L231 Difference]: Finished difference. Result has 207 places, 189 transitions, 2310 flow [2024-06-27 23:07:23,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=207, PETRI_TRANSITIONS=189} [2024-06-27 23:07:23,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 23:07:23,354 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 189 transitions, 2310 flow [2024-06-27 23:07:23,354 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 23:07:23,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:23,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:07:23,355 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 23:07:23,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1456733550, now seen corresponding path program 8 times [2024-06-27 23:07:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:23,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795390308] [2024-06-27 23:07:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795390308] [2024-06-27 23:07:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795390308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:25,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:25,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:25,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710915263] [2024-06-27 23:07:25,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:25,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:25,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 189 transitions, 2310 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 23:07:25,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:25,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:25,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:25,706 INFO L124 PetriNetUnfolderBase]: 365/677 cut-off events. [2024-06-27 23:07:25,706 INFO L125 PetriNetUnfolderBase]: For 55818/55818 co-relation queries the response was YES. [2024-06-27 23:07:25,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 677 events. 365/677 cut-off events. For 55818/55818 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3184 event pairs, 37 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 5868. Up to 518 conditions per place. [2024-06-27 23:07:25,712 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 55 changer transitions 0/197 dead transitions. [2024-06-27 23:07:25,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2716 flow [2024-06-27 23:07:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:07:25,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-27 23:07:25,713 INFO L175 Difference]: Start difference. First operand has 207 places, 189 transitions, 2310 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:07:25,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2716 flow [2024-06-27 23:07:25,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 197 transitions, 2631 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:25,825 INFO L231 Difference]: Finished difference. Result has 209 places, 189 transitions, 2340 flow [2024-06-27 23:07:25,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2340, PETRI_PLACES=209, PETRI_TRANSITIONS=189} [2024-06-27 23:07:25,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-27 23:07:25,826 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 189 transitions, 2340 flow [2024-06-27 23:07:25,826 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 23:07:25,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:25,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:07:25,827 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 23:07:25,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1226991831, now seen corresponding path program 3 times [2024-06-27 23:07:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:25,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392418486] [2024-06-27 23:07:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392418486] [2024-06-27 23:07:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392418486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598691379] [2024-06-27 23:07:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:27,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:27,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 189 transitions, 2340 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 23:07:27,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:27,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:28,264 INFO L124 PetriNetUnfolderBase]: 368/681 cut-off events. [2024-06-27 23:07:28,265 INFO L125 PetriNetUnfolderBase]: For 57246/57246 co-relation queries the response was YES. [2024-06-27 23:07:28,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6066 conditions, 681 events. 368/681 cut-off events. For 57246/57246 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3209 event pairs, 43 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 5965. Up to 576 conditions per place. [2024-06-27 23:07:28,270 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 33 changer transitions 0/199 dead transitions. [2024-06-27 23:07:28,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 199 transitions, 2782 flow [2024-06-27 23:07:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:07:28,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:07:28,272 INFO L175 Difference]: Start difference. First operand has 209 places, 189 transitions, 2340 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:07:28,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 199 transitions, 2782 flow [2024-06-27 23:07:28,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 199 transitions, 2676 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:28,383 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 2341 flow [2024-06-27 23:07:28,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2341, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2024-06-27 23:07:28,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-27 23:07:28,384 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 2341 flow [2024-06-27 23:07:28,384 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 23:07:28,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:28,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:28,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:07:28,385 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 23:07:28,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -880496726, now seen corresponding path program 9 times [2024-06-27 23:07:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805495675] [2024-06-27 23:07:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805495675] [2024-06-27 23:07:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805495675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835007406] [2024-06-27 23:07:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:30,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:30,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:07:30,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 2341 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 23:07:30,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:30,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:07:30,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:30,474 INFO L124 PetriNetUnfolderBase]: 374/692 cut-off events. [2024-06-27 23:07:30,474 INFO L125 PetriNetUnfolderBase]: For 61128/61128 co-relation queries the response was YES. [2024-06-27 23:07:30,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6136 conditions, 692 events. 374/692 cut-off events. For 61128/61128 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3286 event pairs, 34 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 6034. Up to 377 conditions per place. [2024-06-27 23:07:30,480 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 83 changer transitions 0/206 dead transitions. [2024-06-27 23:07:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 206 transitions, 3101 flow [2024-06-27 23:07:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:07:30,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2024-06-27 23:07:30,481 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 2341 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:07:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 206 transitions, 3101 flow [2024-06-27 23:07:30,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 206 transitions, 3016 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:30,636 INFO L231 Difference]: Finished difference. Result has 213 places, 193 transitions, 2454 flow [2024-06-27 23:07:30,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=213, PETRI_TRANSITIONS=193} [2024-06-27 23:07:30,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 23:07:30,636 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 193 transitions, 2454 flow [2024-06-27 23:07:30,636 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 23:07:30,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:30,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:30,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:07:30,637 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 23:07:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1217795340, now seen corresponding path program 10 times [2024-06-27 23:07:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447964646] [2024-06-27 23:07:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:32,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:32,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447964646] [2024-06-27 23:07:32,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447964646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916491078] [2024-06-27 23:07:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:32,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:32,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 193 transitions, 2454 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 23:07:32,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:32,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:32,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:33,317 INFO L124 PetriNetUnfolderBase]: 372/691 cut-off events. [2024-06-27 23:07:33,318 INFO L125 PetriNetUnfolderBase]: For 59333/59333 co-relation queries the response was YES. [2024-06-27 23:07:33,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6184 conditions, 691 events. 372/691 cut-off events. For 59333/59333 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3301 event pairs, 57 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 6081. Up to 626 conditions per place. [2024-06-27 23:07:33,323 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2024-06-27 23:07:33,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 203 transitions, 2910 flow [2024-06-27 23:07:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:07:33,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 23:07:33,328 INFO L175 Difference]: Start difference. First operand has 213 places, 193 transitions, 2454 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:07:33,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 203 transitions, 2910 flow [2024-06-27 23:07:33,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 203 transitions, 2785 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:07:33,448 INFO L231 Difference]: Finished difference. Result has 218 places, 195 transitions, 2408 flow [2024-06-27 23:07:33,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2408, PETRI_PLACES=218, PETRI_TRANSITIONS=195} [2024-06-27 23:07:33,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 23:07:33,454 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 195 transitions, 2408 flow [2024-06-27 23:07:33,454 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 23:07:33,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:33,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:07:33,455 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 23:07:33,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1217795061, now seen corresponding path program 4 times [2024-06-27 23:07:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:33,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368082597] [2024-06-27 23:07:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:35,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:35,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368082597] [2024-06-27 23:07:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368082597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990486589] [2024-06-27 23:07:35,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:35,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 195 transitions, 2408 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 23:07:35,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:35,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:35,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:36,605 INFO L124 PetriNetUnfolderBase]: 375/696 cut-off events. [2024-06-27 23:07:36,605 INFO L125 PetriNetUnfolderBase]: For 61238/61238 co-relation queries the response was YES. [2024-06-27 23:07:36,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 696 events. 375/696 cut-off events. For 61238/61238 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3312 event pairs, 46 based on Foata normal form. 1/696 useless extension candidates. Maximal degree in co-relation 6033. Up to 624 conditions per place. [2024-06-27 23:07:36,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-06-27 23:07:36,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 206 transitions, 3001 flow [2024-06-27 23:07:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:07:36,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:07:36,613 INFO L175 Difference]: Start difference. First operand has 218 places, 195 transitions, 2408 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:07:36,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 206 transitions, 3001 flow [2024-06-27 23:07:36,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 206 transitions, 2942 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:07:36,733 INFO L231 Difference]: Finished difference. Result has 220 places, 197 transitions, 2429 flow [2024-06-27 23:07:36,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2429, PETRI_PLACES=220, PETRI_TRANSITIONS=197} [2024-06-27 23:07:36,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-27 23:07:36,733 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 197 transitions, 2429 flow [2024-06-27 23:07:36,733 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 23:07:36,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:36,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:36,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:07:36,734 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 23:07:36,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -870973247, now seen corresponding path program 5 times [2024-06-27 23:07:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:36,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357387779] [2024-06-27 23:07:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:36,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357387779] [2024-06-27 23:07:38,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357387779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:38,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:38,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081398562] [2024-06-27 23:07:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:38,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:38,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:38,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 197 transitions, 2429 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 23:07:38,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:38,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:38,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:39,335 INFO L124 PetriNetUnfolderBase]: 373/693 cut-off events. [2024-06-27 23:07:39,335 INFO L125 PetriNetUnfolderBase]: For 60704/60704 co-relation queries the response was YES. [2024-06-27 23:07:39,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 693 events. 373/693 cut-off events. For 60704/60704 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 46 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 5953. Up to 622 conditions per place. [2024-06-27 23:07:39,342 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 20 changer transitions 0/206 dead transitions. [2024-06-27 23:07:39,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 206 transitions, 2855 flow [2024-06-27 23:07:39,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:07:39,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:07:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:07:39,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 23:07:39,343 INFO L175 Difference]: Start difference. First operand has 220 places, 197 transitions, 2429 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:07:39,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 206 transitions, 2855 flow [2024-06-27 23:07:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 206 transitions, 2762 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:07:39,475 INFO L231 Difference]: Finished difference. Result has 223 places, 197 transitions, 2381 flow [2024-06-27 23:07:39,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2381, PETRI_PLACES=223, PETRI_TRANSITIONS=197} [2024-06-27 23:07:39,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 23:07:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 197 transitions, 2381 flow [2024-06-27 23:07:39,476 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 23:07:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:39,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:07:39,477 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 23:07:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1381105051, now seen corresponding path program 10 times [2024-06-27 23:07:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126180603] [2024-06-27 23:07:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126180603] [2024-06-27 23:07:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126180603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:40,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:40,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:40,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588273724] [2024-06-27 23:07:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:40,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:41,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:41,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 197 transitions, 2381 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 23:07:41,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:41,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:41,478 INFO L124 PetriNetUnfolderBase]: 376/697 cut-off events. [2024-06-27 23:07:41,478 INFO L125 PetriNetUnfolderBase]: For 62916/62916 co-relation queries the response was YES. [2024-06-27 23:07:41,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 697 events. 376/697 cut-off events. For 62916/62916 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3306 event pairs, 24 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 5989. Up to 585 conditions per place. [2024-06-27 23:07:41,485 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-06-27 23:07:41,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 213 transitions, 2887 flow [2024-06-27 23:07:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:07:41,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:07:41,486 INFO L175 Difference]: Start difference. First operand has 223 places, 197 transitions, 2381 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:07:41,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 213 transitions, 2887 flow [2024-06-27 23:07:41,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 213 transitions, 2842 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:07:41,612 INFO L231 Difference]: Finished difference. Result has 223 places, 199 transitions, 2463 flow [2024-06-27 23:07:41,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=223, PETRI_TRANSITIONS=199} [2024-06-27 23:07:41,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-27 23:07:41,613 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 199 transitions, 2463 flow [2024-06-27 23:07:41,613 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 23:07:41,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:41,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:41,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:07:41,613 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 23:07:41,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1381514251, now seen corresponding path program 11 times [2024-06-27 23:07:41,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:41,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091467439] [2024-06-27 23:07:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:41,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:43,185 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 23:07:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091467439] [2024-06-27 23:07:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091467439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62474472] [2024-06-27 23:07:43,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:43,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:43,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 199 transitions, 2463 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 23:07:43,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:43,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:43,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:43,715 INFO L124 PetriNetUnfolderBase]: 379/704 cut-off events. [2024-06-27 23:07:43,715 INFO L125 PetriNetUnfolderBase]: For 65104/65104 co-relation queries the response was YES. [2024-06-27 23:07:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 704 events. 379/704 cut-off events. For 65104/65104 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3352 event pairs, 23 based on Foata normal form. 1/704 useless extension candidates. Maximal degree in co-relation 6114. Up to 579 conditions per place. [2024-06-27 23:07:43,721 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 38 changer transitions 0/215 dead transitions. [2024-06-27 23:07:43,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 215 transitions, 2975 flow [2024-06-27 23:07:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:07:43,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:07:43,723 INFO L175 Difference]: Start difference. First operand has 223 places, 199 transitions, 2463 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:07:43,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 215 transitions, 2975 flow [2024-06-27 23:07:43,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 215 transitions, 2876 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:07:43,858 INFO L231 Difference]: Finished difference. Result has 225 places, 201 transitions, 2501 flow [2024-06-27 23:07:43,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2501, PETRI_PLACES=225, PETRI_TRANSITIONS=201} [2024-06-27 23:07:43,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-27 23:07:43,858 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 201 transitions, 2501 flow [2024-06-27 23:07:43,858 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 23:07:43,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:43,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:43,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:07:43,859 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 23:07:43,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash 599912931, now seen corresponding path program 12 times [2024-06-27 23:07:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:43,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899743740] [2024-06-27 23:07:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:43,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899743740] [2024-06-27 23:07:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899743740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:45,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:45,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:45,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858049274] [2024-06-27 23:07:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:45,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:45,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:45,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 201 transitions, 2501 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 23:07:45,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:45,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:45,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:46,055 INFO L124 PetriNetUnfolderBase]: 387/719 cut-off events. [2024-06-27 23:07:46,055 INFO L125 PetriNetUnfolderBase]: For 69780/69780 co-relation queries the response was YES. [2024-06-27 23:07:46,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 719 events. 387/719 cut-off events. For 69780/69780 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3450 event pairs, 23 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 6355. Up to 596 conditions per place. [2024-06-27 23:07:46,062 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 35 changer transitions 0/219 dead transitions. [2024-06-27 23:07:46,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 219 transitions, 3217 flow [2024-06-27 23:07:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:07:46,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:07:46,063 INFO L175 Difference]: Start difference. First operand has 225 places, 201 transitions, 2501 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:07:46,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 219 transitions, 3217 flow [2024-06-27 23:07:46,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 219 transitions, 3100 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:07:46,204 INFO L231 Difference]: Finished difference. Result has 228 places, 205 transitions, 2585 flow [2024-06-27 23:07:46,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2585, PETRI_PLACES=228, PETRI_TRANSITIONS=205} [2024-06-27 23:07:46,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-27 23:07:46,204 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 205 transitions, 2585 flow [2024-06-27 23:07:46,205 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 23:07:46,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:46,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:46,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:07:46,205 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 23:07:46,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1255180567, now seen corresponding path program 13 times [2024-06-27 23:07:46,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:46,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726934948] [2024-06-27 23:07:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:48,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726934948] [2024-06-27 23:07:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726934948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:48,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:48,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005211792] [2024-06-27 23:07:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:48,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:48,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:48,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 205 transitions, 2585 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 23:07:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:48,551 INFO L124 PetriNetUnfolderBase]: 385/716 cut-off events. [2024-06-27 23:07:48,551 INFO L125 PetriNetUnfolderBase]: For 69106/69106 co-relation queries the response was YES. [2024-06-27 23:07:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 716 events. 385/716 cut-off events. For 69106/69106 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3425 event pairs, 23 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 6258. Up to 603 conditions per place. [2024-06-27 23:07:48,558 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 31 changer transitions 0/218 dead transitions. [2024-06-27 23:07:48,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 218 transitions, 3049 flow [2024-06-27 23:07:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:07:48,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:07:48,559 INFO L175 Difference]: Start difference. First operand has 228 places, 205 transitions, 2585 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:07:48,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 218 transitions, 3049 flow [2024-06-27 23:07:48,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2908 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 23:07:48,710 INFO L231 Difference]: Finished difference. Result has 231 places, 205 transitions, 2511 flow [2024-06-27 23:07:48,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2511, PETRI_PLACES=231, PETRI_TRANSITIONS=205} [2024-06-27 23:07:48,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 23:07:48,711 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 205 transitions, 2511 flow [2024-06-27 23:07:48,711 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 23:07:48,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:48,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:07:48,711 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 23:07:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 759914639, now seen corresponding path program 14 times [2024-06-27 23:07:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760934672] [2024-06-27 23:07:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:50,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:50,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760934672] [2024-06-27 23:07:50,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760934672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:50,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:50,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:07:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372281996] [2024-06-27 23:07:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:50,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:07:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:07:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:07:50,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:50,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 205 transitions, 2511 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 23:07:50,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:50,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:50,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:51,195 INFO L124 PetriNetUnfolderBase]: 388/723 cut-off events. [2024-06-27 23:07:51,195 INFO L125 PetriNetUnfolderBase]: For 70849/70849 co-relation queries the response was YES. [2024-06-27 23:07:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6383 conditions, 723 events. 388/723 cut-off events. For 70849/70849 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3485 event pairs, 27 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 6272. Up to 544 conditions per place. [2024-06-27 23:07:51,202 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 156 selfloop transitions, 61 changer transitions 0/220 dead transitions. [2024-06-27 23:07:51,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 220 transitions, 3179 flow [2024-06-27 23:07:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:07:51,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:07:51,203 INFO L175 Difference]: Start difference. First operand has 231 places, 205 transitions, 2511 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:07:51,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 220 transitions, 3179 flow [2024-06-27 23:07:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 220 transitions, 3108 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:07:51,354 INFO L231 Difference]: Finished difference. Result has 232 places, 207 transitions, 2627 flow [2024-06-27 23:07:51,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=232, PETRI_TRANSITIONS=207} [2024-06-27 23:07:51,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 23:07:51,355 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 207 transitions, 2627 flow [2024-06-27 23:07:51,355 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 23:07:51,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:51,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:07:51,359 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 23:07:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 605269731, now seen corresponding path program 15 times [2024-06-27 23:07:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138203497] [2024-06-27 23:07:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:51,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:52,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:52,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:52,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138203497] [2024-06-27 23:07:52,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138203497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:52,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:52,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:52,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626105701] [2024-06-27 23:07:52,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:52,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:52,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:53,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:53,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 207 transitions, 2627 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 23:07:53,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:53,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:53,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:53,411 INFO L124 PetriNetUnfolderBase]: 386/720 cut-off events. [2024-06-27 23:07:53,411 INFO L125 PetriNetUnfolderBase]: For 70294/70294 co-relation queries the response was YES. [2024-06-27 23:07:53,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6365 conditions, 720 events. 386/720 cut-off events. For 70294/70294 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3481 event pairs, 27 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 6253. Up to 584 conditions per place. [2024-06-27 23:07:53,417 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-27 23:07:53,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 219 transitions, 3089 flow [2024-06-27 23:07:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:07:53,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:07:53,418 INFO L175 Difference]: Start difference. First operand has 232 places, 207 transitions, 2627 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:07:53,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 219 transitions, 3089 flow [2024-06-27 23:07:53,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 219 transitions, 2805 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-27 23:07:53,570 INFO L231 Difference]: Finished difference. Result has 232 places, 207 transitions, 2432 flow [2024-06-27 23:07:53,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2432, PETRI_PLACES=232, PETRI_TRANSITIONS=207} [2024-06-27 23:07:53,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 23:07:53,571 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 207 transitions, 2432 flow [2024-06-27 23:07:53,571 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 23:07:53,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:53,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:53,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:07:53,571 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 23:07:53,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 605275311, now seen corresponding path program 16 times [2024-06-27 23:07:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:53,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836119556] [2024-06-27 23:07:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:53,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836119556] [2024-06-27 23:07:55,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836119556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:55,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:55,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:55,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085662034] [2024-06-27 23:07:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:55,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:55,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:55,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 207 transitions, 2432 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 23:07:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:55,671 INFO L124 PetriNetUnfolderBase]: 384/717 cut-off events. [2024-06-27 23:07:55,672 INFO L125 PetriNetUnfolderBase]: For 68560/68560 co-relation queries the response was YES. [2024-06-27 23:07:55,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 717 events. 384/717 cut-off events. For 68560/68560 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3467 event pairs, 27 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 5947. Up to 575 conditions per place. [2024-06-27 23:07:55,678 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 44 changer transitions 0/219 dead transitions. [2024-06-27 23:07:55,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 219 transitions, 2894 flow [2024-06-27 23:07:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:07:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:07:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:07:55,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-27 23:07:55,679 INFO L175 Difference]: Start difference. First operand has 232 places, 207 transitions, 2432 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:07:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 219 transitions, 2894 flow [2024-06-27 23:07:55,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 219 transitions, 2720 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:07:55,823 INFO L231 Difference]: Finished difference. Result has 231 places, 207 transitions, 2351 flow [2024-06-27 23:07:55,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2351, PETRI_PLACES=231, PETRI_TRANSITIONS=207} [2024-06-27 23:07:55,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 23:07:55,824 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 207 transitions, 2351 flow [2024-06-27 23:07:55,824 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 23:07:55,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:55,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:55,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:07:55,824 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 23:07:55,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1391052853, now seen corresponding path program 1 times [2024-06-27 23:07:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3137186] [2024-06-27 23:07:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:57,131 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 23:07:57,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:57,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3137186] [2024-06-27 23:07:57,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3137186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:57,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:57,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:57,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932680420] [2024-06-27 23:07:57,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:57,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:57,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:57,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:57,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 207 transitions, 2351 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 23:07:57,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:57,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:57,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:57,755 INFO L124 PetriNetUnfolderBase]: 388/726 cut-off events. [2024-06-27 23:07:57,755 INFO L125 PetriNetUnfolderBase]: For 72950/72950 co-relation queries the response was YES. [2024-06-27 23:07:57,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 726 events. 388/726 cut-off events. For 72950/72950 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3544 event pairs, 32 based on Foata normal form. 2/727 useless extension candidates. Maximal degree in co-relation 5952. Up to 613 conditions per place. [2024-06-27 23:07:57,762 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 190 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2024-06-27 23:07:57,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 220 transitions, 2837 flow [2024-06-27 23:07:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:07:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 23:07:57,764 INFO L175 Difference]: Start difference. First operand has 231 places, 207 transitions, 2351 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:07:57,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 220 transitions, 2837 flow [2024-06-27 23:07:57,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 220 transitions, 2656 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:07:57,914 INFO L231 Difference]: Finished difference. Result has 232 places, 208 transitions, 2250 flow [2024-06-27 23:07:57,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2250, PETRI_PLACES=232, PETRI_TRANSITIONS=208} [2024-06-27 23:07:57,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 23:07:57,915 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 208 transitions, 2250 flow [2024-06-27 23:07:57,915 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 23:07:57,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:57,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:57,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:07:57,923 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 23:07:57,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1388195893, now seen corresponding path program 2 times [2024-06-27 23:07:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310175060] [2024-06-27 23:07:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:07:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:07:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:07:59,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310175060] [2024-06-27 23:07:59,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310175060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:07:59,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:07:59,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:07:59,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673777251] [2024-06-27 23:07:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:07:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:07:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:07:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:07:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:07:59,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:07:59,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 208 transitions, 2250 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 23:07:59,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:07:59,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:07:59,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:07:59,668 INFO L124 PetriNetUnfolderBase]: 397/747 cut-off events. [2024-06-27 23:07:59,668 INFO L125 PetriNetUnfolderBase]: For 74742/74742 co-relation queries the response was YES. [2024-06-27 23:07:59,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6038 conditions, 747 events. 397/747 cut-off events. For 74742/74742 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3720 event pairs, 30 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 5927. Up to 623 conditions per place. [2024-06-27 23:07:59,675 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 26 changer transitions 0/224 dead transitions. [2024-06-27 23:07:59,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 224 transitions, 2756 flow [2024-06-27 23:07:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:07:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:07:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:07:59,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 23:07:59,677 INFO L175 Difference]: Start difference. First operand has 232 places, 208 transitions, 2250 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:07:59,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 224 transitions, 2756 flow [2024-06-27 23:07:59,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 224 transitions, 2679 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:07:59,817 INFO L231 Difference]: Finished difference. Result has 235 places, 210 transitions, 2261 flow [2024-06-27 23:07:59,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2173, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2261, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2024-06-27 23:07:59,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-27 23:07:59,818 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 2261 flow [2024-06-27 23:07:59,818 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 23:07:59,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:07:59,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:07:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:07:59,819 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 23:07:59,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:07:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1506344023, now seen corresponding path program 3 times [2024-06-27 23:07:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:07:59,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385452654] [2024-06-27 23:07:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:07:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:07:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385452654] [2024-06-27 23:08:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385452654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:08:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324836138] [2024-06-27 23:08:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:01,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:08:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:08:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:08:01,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:08:01,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 2261 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 23:08:01,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:01,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:08:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:01,686 INFO L124 PetriNetUnfolderBase]: 401/755 cut-off events. [2024-06-27 23:08:01,687 INFO L125 PetriNetUnfolderBase]: For 76859/76859 co-relation queries the response was YES. [2024-06-27 23:08:01,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6099 conditions, 755 events. 401/755 cut-off events. For 76859/76859 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3770 event pairs, 32 based on Foata normal form. 2/756 useless extension candidates. Maximal degree in co-relation 5987. Up to 634 conditions per place. [2024-06-27 23:08:01,693 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 30 changer transitions 0/222 dead transitions. [2024-06-27 23:08:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 222 transitions, 2751 flow [2024-06-27 23:08:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:08:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:08:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:08:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-27 23:08:01,694 INFO L175 Difference]: Start difference. First operand has 235 places, 210 transitions, 2261 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:08:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 222 transitions, 2751 flow [2024-06-27 23:08:01,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 222 transitions, 2683 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:08:01,850 INFO L231 Difference]: Finished difference. Result has 237 places, 211 transitions, 2283 flow [2024-06-27 23:08:01,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2283, PETRI_PLACES=237, PETRI_TRANSITIONS=211} [2024-06-27 23:08:01,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 23:08:01,851 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 211 transitions, 2283 flow [2024-06-27 23:08:01,851 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 23:08:01,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:01,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:01,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:08:01,851 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 23:08:01,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1506528721, now seen corresponding path program 1 times [2024-06-27 23:08:01,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:01,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051866387] [2024-06-27 23:08:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051866387] [2024-06-27 23:08:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051866387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:04,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412986987] [2024-06-27 23:08:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:04,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:04,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 211 transitions, 2283 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 23:08:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:04,723 INFO L124 PetriNetUnfolderBase]: 402/754 cut-off events. [2024-06-27 23:08:04,723 INFO L125 PetriNetUnfolderBase]: For 75799/75799 co-relation queries the response was YES. [2024-06-27 23:08:04,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6043 conditions, 754 events. 402/754 cut-off events. For 75799/75799 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3745 event pairs, 23 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5930. Up to 590 conditions per place. [2024-06-27 23:08:04,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 51 changer transitions 0/226 dead transitions. [2024-06-27 23:08:04,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 226 transitions, 2795 flow [2024-06-27 23:08:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:08:04,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:08:04,731 INFO L175 Difference]: Start difference. First operand has 237 places, 211 transitions, 2283 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:08:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 226 transitions, 2795 flow [2024-06-27 23:08:04,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 226 transitions, 2715 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:08:04,876 INFO L231 Difference]: Finished difference. Result has 240 places, 213 transitions, 2349 flow [2024-06-27 23:08:04,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2349, PETRI_PLACES=240, PETRI_TRANSITIONS=213} [2024-06-27 23:08:04,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 23:08:04,877 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 213 transitions, 2349 flow [2024-06-27 23:08:04,877 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 23:08:04,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:04,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:04,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:08:04,878 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 23:08:04,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1506528473, now seen corresponding path program 1 times [2024-06-27 23:08:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:04,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619641853] [2024-06-27 23:08:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:04,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:06,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:06,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619641853] [2024-06-27 23:08:06,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619641853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:06,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:08:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828509294] [2024-06-27 23:08:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:08:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:08:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:08:06,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:06,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 213 transitions, 2349 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 23:08:06,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:06,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:06,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:07,103 INFO L124 PetriNetUnfolderBase]: 423/794 cut-off events. [2024-06-27 23:08:07,104 INFO L125 PetriNetUnfolderBase]: For 86421/86421 co-relation queries the response was YES. [2024-06-27 23:08:07,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6637 conditions, 794 events. 423/794 cut-off events. For 86421/86421 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4019 event pairs, 24 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 6523. Up to 565 conditions per place. [2024-06-27 23:08:07,111 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 68 changer transitions 0/235 dead transitions. [2024-06-27 23:08:07,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 235 transitions, 3149 flow [2024-06-27 23:08:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:08:07,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:08:07,113 INFO L175 Difference]: Start difference. First operand has 240 places, 213 transitions, 2349 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:08:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 235 transitions, 3149 flow [2024-06-27 23:08:07,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 235 transitions, 2924 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 23:08:07,305 INFO L231 Difference]: Finished difference. Result has 241 places, 219 transitions, 2403 flow [2024-06-27 23:08:07,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2403, PETRI_PLACES=241, PETRI_TRANSITIONS=219} [2024-06-27 23:08:07,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-27 23:08:07,311 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 219 transitions, 2403 flow [2024-06-27 23:08:07,311 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 23:08:07,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:07,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:08:07,311 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 23:08:07,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1506348983, now seen corresponding path program 2 times [2024-06-27 23:08:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805491750] [2024-06-27 23:08:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:09,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805491750] [2024-06-27 23:08:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805491750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:09,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:09,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340163356] [2024-06-27 23:08:09,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:09,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:09,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:09,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 219 transitions, 2403 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 23:08:09,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:09,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:09,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:10,352 INFO L124 PetriNetUnfolderBase]: 421/791 cut-off events. [2024-06-27 23:08:10,352 INFO L125 PetriNetUnfolderBase]: For 83607/83607 co-relation queries the response was YES. [2024-06-27 23:08:10,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6544 conditions, 791 events. 421/791 cut-off events. For 83607/83607 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4003 event pairs, 24 based on Foata normal form. 1/791 useless extension candidates. Maximal degree in co-relation 6429. Up to 636 conditions per place. [2024-06-27 23:08:10,360 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 180 selfloop transitions, 50 changer transitions 0/233 dead transitions. [2024-06-27 23:08:10,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 233 transitions, 2911 flow [2024-06-27 23:08:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:08:10,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-27 23:08:10,361 INFO L175 Difference]: Start difference. First operand has 241 places, 219 transitions, 2403 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:08:10,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 233 transitions, 2911 flow [2024-06-27 23:08:10,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 233 transitions, 2716 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:10,542 INFO L231 Difference]: Finished difference. Result has 243 places, 220 transitions, 2333 flow [2024-06-27 23:08:10,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2333, PETRI_PLACES=243, PETRI_TRANSITIONS=220} [2024-06-27 23:08:10,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-27 23:08:10,542 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 220 transitions, 2333 flow [2024-06-27 23:08:10,543 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 23:08:10,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:10,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:08:10,543 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 23:08:10,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1506521963, now seen corresponding path program 3 times [2024-06-27 23:08:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826140056] [2024-06-27 23:08:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:12,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826140056] [2024-06-27 23:08:12,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826140056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:12,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:12,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:08:12,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912712302] [2024-06-27 23:08:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:12,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:08:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:08:12,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:08:12,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:08:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 220 transitions, 2333 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 23:08:12,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:12,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:08:12,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:12,674 INFO L124 PetriNetUnfolderBase]: 419/788 cut-off events. [2024-06-27 23:08:12,675 INFO L125 PetriNetUnfolderBase]: For 81116/81116 co-relation queries the response was YES. [2024-06-27 23:08:12,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 788 events. 419/788 cut-off events. For 81116/81116 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4003 event pairs, 33 based on Foata normal form. 1/788 useless extension candidates. Maximal degree in co-relation 6168. Up to 563 conditions per place. [2024-06-27 23:08:12,681 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 66 changer transitions 0/236 dead transitions. [2024-06-27 23:08:12,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 236 transitions, 3036 flow [2024-06-27 23:08:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:08:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:08:12,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 23:08:12,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2024-06-27 23:08:12,682 INFO L175 Difference]: Start difference. First operand has 243 places, 220 transitions, 2333 flow. Second operand 9 states and 138 transitions. [2024-06-27 23:08:12,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 236 transitions, 3036 flow [2024-06-27 23:08:12,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 236 transitions, 2919 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:12,833 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 2402 flow [2024-06-27 23:08:12,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2402, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2024-06-27 23:08:12,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-27 23:08:12,834 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 2402 flow [2024-06-27 23:08:12,834 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 23:08:12,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:12,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:08:12,834 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 23:08:12,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1671983157, now seen corresponding path program 4 times [2024-06-27 23:08:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580129706] [2024-06-27 23:08:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580129706] [2024-06-27 23:08:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580129706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:14,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:08:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524148220] [2024-06-27 23:08:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:08:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:14,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:08:14,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:08:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:08:14,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 2402 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 23:08:14,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:14,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:08:14,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:14,683 INFO L124 PetriNetUnfolderBase]: 423/797 cut-off events. [2024-06-27 23:08:14,683 INFO L125 PetriNetUnfolderBase]: For 87708/87708 co-relation queries the response was YES. [2024-06-27 23:08:14,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 797 events. 423/797 cut-off events. For 87708/87708 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4064 event pairs, 29 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 6298. Up to 663 conditions per place. [2024-06-27 23:08:14,690 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 196 selfloop transitions, 34 changer transitions 0/233 dead transitions. [2024-06-27 23:08:14,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 233 transitions, 2912 flow [2024-06-27 23:08:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:08:14,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 23:08:14,691 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 2402 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:08:14,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 233 transitions, 2912 flow [2024-06-27 23:08:14,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 233 transitions, 2776 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:08:14,859 INFO L231 Difference]: Finished difference. Result has 248 places, 223 transitions, 2366 flow [2024-06-27 23:08:14,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2366, PETRI_PLACES=248, PETRI_TRANSITIONS=223} [2024-06-27 23:08:14,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-27 23:08:14,860 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 223 transitions, 2366 flow [2024-06-27 23:08:14,860 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 23:08:14,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:14,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:14,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:08:14,861 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 23:08:14,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -468116593, now seen corresponding path program 1 times [2024-06-27 23:08:14,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214070967] [2024-06-27 23:08:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214070967] [2024-06-27 23:08:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214070967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384505345] [2024-06-27 23:08:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:17,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:17,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:17,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 223 transitions, 2366 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 23:08:17,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:17,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:17,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:17,697 INFO L124 PetriNetUnfolderBase]: 427/804 cut-off events. [2024-06-27 23:08:17,698 INFO L125 PetriNetUnfolderBase]: For 89990/89990 co-relation queries the response was YES. [2024-06-27 23:08:17,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6428 conditions, 804 events. 427/804 cut-off events. For 89990/89990 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4096 event pairs, 34 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 6311. Up to 706 conditions per place. [2024-06-27 23:08:17,704 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 210 selfloop transitions, 23 changer transitions 0/236 dead transitions. [2024-06-27 23:08:17,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 236 transitions, 2886 flow [2024-06-27 23:08:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:08:17,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:08:17,706 INFO L175 Difference]: Start difference. First operand has 248 places, 223 transitions, 2366 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:08:17,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 236 transitions, 2886 flow [2024-06-27 23:08:17,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 236 transitions, 2796 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:17,877 INFO L231 Difference]: Finished difference. Result has 250 places, 224 transitions, 2354 flow [2024-06-27 23:08:17,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2354, PETRI_PLACES=250, PETRI_TRANSITIONS=224} [2024-06-27 23:08:17,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 23:08:17,877 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 224 transitions, 2354 flow [2024-06-27 23:08:17,877 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 23:08:17,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:17,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:08:17,878 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 23:08:17,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash -468116903, now seen corresponding path program 2 times [2024-06-27 23:08:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923080192] [2024-06-27 23:08:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:20,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923080192] [2024-06-27 23:08:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923080192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254118132] [2024-06-27 23:08:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:20,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:20,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:20,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 224 transitions, 2354 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 23:08:20,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:20,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:20,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:21,116 INFO L124 PetriNetUnfolderBase]: 435/819 cut-off events. [2024-06-27 23:08:21,117 INFO L125 PetriNetUnfolderBase]: For 91968/91968 co-relation queries the response was YES. [2024-06-27 23:08:21,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 819 events. 435/819 cut-off events. For 91968/91968 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4194 event pairs, 25 based on Foata normal form. 1/819 useless extension candidates. Maximal degree in co-relation 6475. Up to 585 conditions per place. [2024-06-27 23:08:21,124 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 77 changer transitions 0/240 dead transitions. [2024-06-27 23:08:21,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 240 transitions, 3094 flow [2024-06-27 23:08:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:08:21,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-27 23:08:21,125 INFO L175 Difference]: Start difference. First operand has 250 places, 224 transitions, 2354 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:08:21,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 240 transitions, 3094 flow [2024-06-27 23:08:21,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 240 transitions, 3026 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:21,302 INFO L231 Difference]: Finished difference. Result has 252 places, 228 transitions, 2521 flow [2024-06-27 23:08:21,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2521, PETRI_PLACES=252, PETRI_TRANSITIONS=228} [2024-06-27 23:08:21,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 23:08:21,303 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 228 transitions, 2521 flow [2024-06-27 23:08:21,303 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 23:08:21,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:21,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:21,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:08:21,304 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 23:08:21,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash -863334189, now seen corresponding path program 3 times [2024-06-27 23:08:21,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:21,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617917143] [2024-06-27 23:08:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:23,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:23,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617917143] [2024-06-27 23:08:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617917143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:23,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:23,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290885175] [2024-06-27 23:08:23,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:23,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:23,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:23,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:23,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 228 transitions, 2521 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 23:08:23,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:23,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:23,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:23,933 INFO L124 PetriNetUnfolderBase]: 442/830 cut-off events. [2024-06-27 23:08:23,934 INFO L125 PetriNetUnfolderBase]: For 97237/97237 co-relation queries the response was YES. [2024-06-27 23:08:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6812 conditions, 830 events. 442/830 cut-off events. For 97237/97237 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4259 event pairs, 25 based on Foata normal form. 2/831 useless extension candidates. Maximal degree in co-relation 6693. Up to 642 conditions per place. [2024-06-27 23:08:23,941 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 62 changer transitions 0/244 dead transitions. [2024-06-27 23:08:23,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 244 transitions, 3275 flow [2024-06-27 23:08:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:08:23,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-27 23:08:23,942 INFO L175 Difference]: Start difference. First operand has 252 places, 228 transitions, 2521 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:08:23,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 244 transitions, 3275 flow [2024-06-27 23:08:24,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 244 transitions, 3137 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:08:24,143 INFO L231 Difference]: Finished difference. Result has 256 places, 232 transitions, 2599 flow [2024-06-27 23:08:24,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2599, PETRI_PLACES=256, PETRI_TRANSITIONS=232} [2024-06-27 23:08:24,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-27 23:08:24,144 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 232 transitions, 2599 flow [2024-06-27 23:08:24,144 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 23:08:24,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:24,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:08:24,145 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 23:08:24,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1286697297, now seen corresponding path program 4 times [2024-06-27 23:08:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:24,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198559755] [2024-06-27 23:08:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:26,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:26,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198559755] [2024-06-27 23:08:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198559755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:26,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:26,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465823986] [2024-06-27 23:08:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:26,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:26,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:26,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 232 transitions, 2599 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 23:08:26,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:26,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:26,872 INFO L124 PetriNetUnfolderBase]: 469/875 cut-off events. [2024-06-27 23:08:26,872 INFO L125 PetriNetUnfolderBase]: For 112842/112842 co-relation queries the response was YES. [2024-06-27 23:08:26,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7660 conditions, 875 events. 469/875 cut-off events. For 112842/112842 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4528 event pairs, 37 based on Foata normal form. 2/876 useless extension candidates. Maximal degree in co-relation 7539. Up to 512 conditions per place. [2024-06-27 23:08:26,880 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 109 changer transitions 0/255 dead transitions. [2024-06-27 23:08:26,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 255 transitions, 3679 flow [2024-06-27 23:08:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 23:08:26,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-27 23:08:26,883 INFO L175 Difference]: Start difference. First operand has 256 places, 232 transitions, 2599 flow. Second operand 10 states and 141 transitions. [2024-06-27 23:08:26,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 255 transitions, 3679 flow [2024-06-27 23:08:27,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 255 transitions, 3431 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 23:08:27,133 INFO L231 Difference]: Finished difference. Result has 257 places, 241 transitions, 2777 flow [2024-06-27 23:08:27,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2777, PETRI_PLACES=257, PETRI_TRANSITIONS=241} [2024-06-27 23:08:27,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 23:08:27,134 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 241 transitions, 2777 flow [2024-06-27 23:08:27,134 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 23:08:27,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:27,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:27,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:08:27,134 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 23:08:27,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:27,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1671988117, now seen corresponding path program 5 times [2024-06-27 23:08:27,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:27,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855602002] [2024-06-27 23:08:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855602002] [2024-06-27 23:08:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855602002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:28,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:28,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:08:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325350249] [2024-06-27 23:08:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:28,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:08:28,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:08:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:08:29,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:29,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 241 transitions, 2777 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 23:08:29,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:29,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:29,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:29,430 INFO L124 PetriNetUnfolderBase]: 466/874 cut-off events. [2024-06-27 23:08:29,430 INFO L125 PetriNetUnfolderBase]: For 109647/109647 co-relation queries the response was YES. [2024-06-27 23:08:29,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 874 events. 466/874 cut-off events. For 109647/109647 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4559 event pairs, 27 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 7499. Up to 700 conditions per place. [2024-06-27 23:08:29,438 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 54 changer transitions 0/252 dead transitions. [2024-06-27 23:08:29,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 252 transitions, 3301 flow [2024-06-27 23:08:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:29,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:08:29,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-27 23:08:29,440 INFO L175 Difference]: Start difference. First operand has 257 places, 241 transitions, 2777 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:08:29,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 252 transitions, 3301 flow [2024-06-27 23:08:29,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 252 transitions, 3093 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 23:08:29,694 INFO L231 Difference]: Finished difference. Result has 262 places, 241 transitions, 2683 flow [2024-06-27 23:08:29,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2683, PETRI_PLACES=262, PETRI_TRANSITIONS=241} [2024-06-27 23:08:29,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-27 23:08:29,695 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 241 transitions, 2683 flow [2024-06-27 23:08:29,695 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 23:08:29,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:29,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:29,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:08:29,695 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 23:08:29,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash -468355913, now seen corresponding path program 4 times [2024-06-27 23:08:29,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:29,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505068019] [2024-06-27 23:08:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:29,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:32,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:32,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505068019] [2024-06-27 23:08:32,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505068019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:32,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845834136] [2024-06-27 23:08:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:32,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:32,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:32,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 241 transitions, 2683 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 23:08:32,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:32,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:32,558 INFO L124 PetriNetUnfolderBase]: 464/871 cut-off events. [2024-06-27 23:08:32,558 INFO L125 PetriNetUnfolderBase]: For 106990/106990 co-relation queries the response was YES. [2024-06-27 23:08:32,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7412 conditions, 871 events. 464/871 cut-off events. For 106990/106990 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4542 event pairs, 36 based on Foata normal form. 1/871 useless extension candidates. Maximal degree in co-relation 7288. Up to 650 conditions per place. [2024-06-27 23:08:32,566 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 183 selfloop transitions, 66 changer transitions 0/252 dead transitions. [2024-06-27 23:08:32,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 252 transitions, 3207 flow [2024-06-27 23:08:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:08:32,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:08:32,568 INFO L175 Difference]: Start difference. First operand has 262 places, 241 transitions, 2683 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:08:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 252 transitions, 3207 flow [2024-06-27 23:08:32,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 252 transitions, 3093 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:08:32,798 INFO L231 Difference]: Finished difference. Result has 263 places, 241 transitions, 2706 flow [2024-06-27 23:08:32,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2706, PETRI_PLACES=263, PETRI_TRANSITIONS=241} [2024-06-27 23:08:32,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-27 23:08:32,799 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 241 transitions, 2706 flow [2024-06-27 23:08:32,799 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 23:08:32,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:32,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:32,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:08:32,799 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 23:08:32,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:32,800 INFO L85 PathProgramCache]: Analyzing trace with hash -468356161, now seen corresponding path program 6 times [2024-06-27 23:08:32,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:32,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207190460] [2024-06-27 23:08:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207190460] [2024-06-27 23:08:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207190460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012945802] [2024-06-27 23:08:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:34,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:34,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:34,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 241 transitions, 2706 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 23:08:34,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:34,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:34,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:35,422 INFO L124 PetriNetUnfolderBase]: 480/901 cut-off events. [2024-06-27 23:08:35,422 INFO L125 PetriNetUnfolderBase]: For 120915/120915 co-relation queries the response was YES. [2024-06-27 23:08:35,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7906 conditions, 901 events. 480/901 cut-off events. For 120915/120915 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4735 event pairs, 36 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 7781. Up to 523 conditions per place. [2024-06-27 23:08:35,430 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 97 changer transitions 0/262 dead transitions. [2024-06-27 23:08:35,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 262 transitions, 3942 flow [2024-06-27 23:08:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 23:08:35,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-27 23:08:35,431 INFO L175 Difference]: Start difference. First operand has 263 places, 241 transitions, 2706 flow. Second operand 10 states and 144 transitions. [2024-06-27 23:08:35,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 262 transitions, 3942 flow [2024-06-27 23:08:35,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 262 transitions, 3777 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:08:35,727 INFO L231 Difference]: Finished difference. Result has 264 places, 246 transitions, 2850 flow [2024-06-27 23:08:35,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2850, PETRI_PLACES=264, PETRI_TRANSITIONS=246} [2024-06-27 23:08:35,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 23:08:35,728 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 246 transitions, 2850 flow [2024-06-27 23:08:35,728 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 23:08:35,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:35,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:35,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:08:35,728 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 23:08:35,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash -468362671, now seen corresponding path program 7 times [2024-06-27 23:08:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548200601] [2024-06-27 23:08:35,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:37,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548200601] [2024-06-27 23:08:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548200601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:37,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:37,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645450690] [2024-06-27 23:08:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:37,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:37,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:37,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:38,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:38,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 246 transitions, 2850 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 23:08:38,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:38,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:38,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:38,623 INFO L124 PetriNetUnfolderBase]: 478/896 cut-off events. [2024-06-27 23:08:38,624 INFO L125 PetriNetUnfolderBase]: For 116783/116783 co-relation queries the response was YES. [2024-06-27 23:08:38,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7882 conditions, 896 events. 478/896 cut-off events. For 116783/116783 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4673 event pairs, 26 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 7757. Up to 584 conditions per place. [2024-06-27 23:08:38,632 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 90 changer transitions 0/265 dead transitions. [2024-06-27 23:08:38,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 265 transitions, 3737 flow [2024-06-27 23:08:38,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:08:38,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:08:38,634 INFO L175 Difference]: Start difference. First operand has 264 places, 246 transitions, 2850 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:08:38,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 265 transitions, 3737 flow [2024-06-27 23:08:38,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 265 transitions, 3513 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 23:08:38,913 INFO L231 Difference]: Finished difference. Result has 270 places, 253 transitions, 3039 flow [2024-06-27 23:08:38,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3039, PETRI_PLACES=270, PETRI_TRANSITIONS=253} [2024-06-27 23:08:38,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 23:08:38,913 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 253 transitions, 3039 flow [2024-06-27 23:08:38,914 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 23:08:38,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:38,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:38,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:08:38,914 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 23:08:38,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash -468125273, now seen corresponding path program 5 times [2024-06-27 23:08:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700793023] [2024-06-27 23:08:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:41,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700793023] [2024-06-27 23:08:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700793023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:41,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736466961] [2024-06-27 23:08:41,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:41,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:41,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:41,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:41,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 253 transitions, 3039 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 23:08:41,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:41,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:41,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:41,758 INFO L124 PetriNetUnfolderBase]: 475/892 cut-off events. [2024-06-27 23:08:41,758 INFO L125 PetriNetUnfolderBase]: For 115800/115800 co-relation queries the response was YES. [2024-06-27 23:08:41,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 892 events. 475/892 cut-off events. For 115800/115800 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4681 event pairs, 36 based on Foata normal form. 1/892 useless extension candidates. Maximal degree in co-relation 7692. Up to 668 conditions per place. [2024-06-27 23:08:41,767 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 71 changer transitions 0/264 dead transitions. [2024-06-27 23:08:41,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 264 transitions, 3587 flow [2024-06-27 23:08:41,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:08:41,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:08:41,769 INFO L175 Difference]: Start difference. First operand has 270 places, 253 transitions, 3039 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:08:41,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 264 transitions, 3587 flow [2024-06-27 23:08:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 264 transitions, 3460 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 23:08:42,019 INFO L231 Difference]: Finished difference. Result has 275 places, 253 transitions, 3059 flow [2024-06-27 23:08:42,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3059, PETRI_PLACES=275, PETRI_TRANSITIONS=253} [2024-06-27 23:08:42,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 23:08:42,020 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 253 transitions, 3059 flow [2024-06-27 23:08:42,020 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 23:08:42,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:42,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:08:42,020 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 23:08:42,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1672167607, now seen corresponding path program 8 times [2024-06-27 23:08:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484674774] [2024-06-27 23:08:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:44,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:44,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484674774] [2024-06-27 23:08:44,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484674774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:44,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:44,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:44,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751064402] [2024-06-27 23:08:44,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:44,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:44,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:44,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 253 transitions, 3059 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 23:08:44,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:44,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:44,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:44,828 INFO L124 PetriNetUnfolderBase]: 481/902 cut-off events. [2024-06-27 23:08:44,828 INFO L125 PetriNetUnfolderBase]: For 122612/122612 co-relation queries the response was YES. [2024-06-27 23:08:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8023 conditions, 902 events. 481/902 cut-off events. For 122612/122612 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4741 event pairs, 26 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 7893. Up to 683 conditions per place. [2024-06-27 23:08:44,837 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 69 changer transitions 0/269 dead transitions. [2024-06-27 23:08:44,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 269 transitions, 3902 flow [2024-06-27 23:08:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:44,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:08:44,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:08:44,838 INFO L175 Difference]: Start difference. First operand has 275 places, 253 transitions, 3059 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:08:44,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 269 transitions, 3902 flow [2024-06-27 23:08:45,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 269 transitions, 3753 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:45,169 INFO L231 Difference]: Finished difference. Result has 277 places, 257 transitions, 3159 flow [2024-06-27 23:08:45,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3159, PETRI_PLACES=277, PETRI_TRANSITIONS=257} [2024-06-27 23:08:45,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 23:08:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 257 transitions, 3159 flow [2024-06-27 23:08:45,170 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 23:08:45,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:45,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:08:45,170 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 23:08:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1672161097, now seen corresponding path program 9 times [2024-06-27 23:08:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820581843] [2024-06-27 23:08:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:47,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820581843] [2024-06-27 23:08:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820581843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:47,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:47,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:08:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725698135] [2024-06-27 23:08:47,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:47,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:08:47,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:08:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:08:47,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:47,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 257 transitions, 3159 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 23:08:47,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:47,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:47,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:47,675 INFO L124 PetriNetUnfolderBase]: 479/899 cut-off events. [2024-06-27 23:08:47,675 INFO L125 PetriNetUnfolderBase]: For 115782/115782 co-relation queries the response was YES. [2024-06-27 23:08:47,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7918 conditions, 899 events. 479/899 cut-off events. For 115782/115782 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4722 event pairs, 36 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 7787. Up to 682 conditions per place. [2024-06-27 23:08:47,685 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 68 changer transitions 0/269 dead transitions. [2024-06-27 23:08:47,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 3903 flow [2024-06-27 23:08:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:08:47,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-27 23:08:47,686 INFO L175 Difference]: Start difference. First operand has 277 places, 257 transitions, 3159 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:08:47,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 3903 flow [2024-06-27 23:08:47,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 269 transitions, 3541 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 23:08:47,997 INFO L231 Difference]: Finished difference. Result has 277 places, 257 transitions, 2939 flow [2024-06-27 23:08:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2939, PETRI_PLACES=277, PETRI_TRANSITIONS=257} [2024-06-27 23:08:47,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 23:08:47,998 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 257 transitions, 2939 flow [2024-06-27 23:08:47,998 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 23:08:47,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:47,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:47,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:08:47,999 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 23:08:47,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1249699151, now seen corresponding path program 5 times [2024-06-27 23:08:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515274469] [2024-06-27 23:08:48,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:49,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:49,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515274469] [2024-06-27 23:08:49,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515274469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:49,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:49,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:08:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901145366] [2024-06-27 23:08:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:49,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:08:49,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:08:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:08:49,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:08:49,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 257 transitions, 2939 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 23:08:49,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:49,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:08:49,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:49,914 INFO L124 PetriNetUnfolderBase]: 483/907 cut-off events. [2024-06-27 23:08:49,914 INFO L125 PetriNetUnfolderBase]: For 122403/122403 co-relation queries the response was YES. [2024-06-27 23:08:49,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7768 conditions, 907 events. 483/907 cut-off events. For 122403/122403 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4785 event pairs, 47 based on Foata normal form. 2/908 useless extension candidates. Maximal degree in co-relation 7637. Up to 723 conditions per place. [2024-06-27 23:08:49,924 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 209 selfloop transitions, 55 changer transitions 0/267 dead transitions. [2024-06-27 23:08:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 267 transitions, 3515 flow [2024-06-27 23:08:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:08:49,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 23:08:49,925 INFO L175 Difference]: Start difference. First operand has 277 places, 257 transitions, 2939 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:08:49,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 267 transitions, 3515 flow [2024-06-27 23:08:50,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 267 transitions, 3381 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:08:50,225 INFO L231 Difference]: Finished difference. Result has 280 places, 258 transitions, 2949 flow [2024-06-27 23:08:50,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2949, PETRI_PLACES=280, PETRI_TRANSITIONS=258} [2024-06-27 23:08:50,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-27 23:08:50,226 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 258 transitions, 2949 flow [2024-06-27 23:08:50,226 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 23:08:50,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:50,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:50,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:08:50,226 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 23:08:50,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash -887411783, now seen corresponding path program 10 times [2024-06-27 23:08:50,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:50,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8494913] [2024-06-27 23:08:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8494913] [2024-06-27 23:08:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8494913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:08:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122595771] [2024-06-27 23:08:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:52,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:08:52,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:08:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:08:52,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:52,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 258 transitions, 2949 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 23:08:52,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:52,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:52,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:53,555 INFO L124 PetriNetUnfolderBase]: 516/971 cut-off events. [2024-06-27 23:08:53,556 INFO L125 PetriNetUnfolderBase]: For 147899/147899 co-relation queries the response was YES. [2024-06-27 23:08:53,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 971 events. 516/971 cut-off events. For 147899/147899 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5217 event pairs, 46 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 8737. Up to 697 conditions per place. [2024-06-27 23:08:53,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 71 changer transitions 0/282 dead transitions. [2024-06-27 23:08:53,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 282 transitions, 4367 flow [2024-06-27 23:08:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:08:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:08:53,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 23:08:53,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2024-06-27 23:08:53,566 INFO L175 Difference]: Start difference. First operand has 280 places, 258 transitions, 2949 flow. Second operand 9 states and 136 transitions. [2024-06-27 23:08:53,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 282 transitions, 4367 flow [2024-06-27 23:08:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 282 transitions, 4233 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:08:53,959 INFO L231 Difference]: Finished difference. Result has 283 places, 269 transitions, 3233 flow [2024-06-27 23:08:53,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3233, PETRI_PLACES=283, PETRI_TRANSITIONS=269} [2024-06-27 23:08:53,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 23:08:53,959 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 269 transitions, 3233 flow [2024-06-27 23:08:53,959 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 23:08:53,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:53,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:53,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:08:53,960 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 23:08:53,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1525584487, now seen corresponding path program 2 times [2024-06-27 23:08:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:53,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177910278] [2024-06-27 23:08:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:56,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177910278] [2024-06-27 23:08:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177910278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:56,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:56,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:08:56,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406715496] [2024-06-27 23:08:56,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:08:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:08:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:08:56,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:56,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 269 transitions, 3233 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 23:08:56,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:56,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:56,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:08:57,114 INFO L124 PetriNetUnfolderBase]: 520/977 cut-off events. [2024-06-27 23:08:57,114 INFO L125 PetriNetUnfolderBase]: For 157524/157524 co-relation queries the response was YES. [2024-06-27 23:08:57,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 977 events. 520/977 cut-off events. For 157524/157524 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5258 event pairs, 33 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 8931. Up to 834 conditions per place. [2024-06-27 23:08:57,124 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 243 selfloop transitions, 34 changer transitions 0/280 dead transitions. [2024-06-27 23:08:57,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 280 transitions, 3837 flow [2024-06-27 23:08:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:08:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:08:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:08:57,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:08:57,126 INFO L175 Difference]: Start difference. First operand has 283 places, 269 transitions, 3233 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:08:57,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 280 transitions, 3837 flow [2024-06-27 23:08:57,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 280 transitions, 3691 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 23:08:57,513 INFO L231 Difference]: Finished difference. Result has 290 places, 270 transitions, 3189 flow [2024-06-27 23:08:57,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3189, PETRI_PLACES=290, PETRI_TRANSITIONS=270} [2024-06-27 23:08:57,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 23:08:57,513 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 270 transitions, 3189 flow [2024-06-27 23:08:57,513 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 23:08:57,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:08:57,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:08:57,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:08:57,514 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 23:08:57,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:08:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1525593415, now seen corresponding path program 11 times [2024-06-27 23:08:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:08:57,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259754202] [2024-06-27 23:08:57,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:08:57,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:08:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:08:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:08:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:08:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259754202] [2024-06-27 23:08:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259754202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:08:59,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:08:59,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:08:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255922166] [2024-06-27 23:08:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:08:59,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:08:59,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:08:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:08:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:08:59,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:08:59,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 270 transitions, 3189 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 23:08:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:08:59,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:08:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:00,084 INFO L124 PetriNetUnfolderBase]: 541/1018 cut-off events. [2024-06-27 23:09:00,085 INFO L125 PetriNetUnfolderBase]: For 173218/173218 co-relation queries the response was YES. [2024-06-27 23:09:00,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 1018 events. 541/1018 cut-off events. For 173218/173218 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5550 event pairs, 41 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 9558. Up to 437 conditions per place. [2024-06-27 23:09:00,096 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 137 changer transitions 0/296 dead transitions. [2024-06-27 23:09:00,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 296 transitions, 4909 flow [2024-06-27 23:09:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 23:09:00,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806451612903226 [2024-06-27 23:09:00,098 INFO L175 Difference]: Start difference. First operand has 290 places, 270 transitions, 3189 flow. Second operand 10 states and 149 transitions. [2024-06-27 23:09:00,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 296 transitions, 4909 flow [2024-06-27 23:09:00,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 296 transitions, 4817 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:00,535 INFO L231 Difference]: Finished difference. Result has 292 places, 279 transitions, 3585 flow [2024-06-27 23:09:00,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3585, PETRI_PLACES=292, PETRI_TRANSITIONS=279} [2024-06-27 23:09:00,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-27 23:09:00,536 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 279 transitions, 3585 flow [2024-06-27 23:09:00,536 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 23:09:00,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:00,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:00,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:09:00,536 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 23:09:00,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1525824055, now seen corresponding path program 12 times [2024-06-27 23:09:00,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:00,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979419770] [2024-06-27 23:09:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:00,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979419770] [2024-06-27 23:09:02,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979419770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:02,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:02,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596092012] [2024-06-27 23:09:02,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:02,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:02,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:02,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 279 transitions, 3585 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 23:09:02,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:02,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:02,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:03,205 INFO L124 PetriNetUnfolderBase]: 547/1028 cut-off events. [2024-06-27 23:09:03,205 INFO L125 PetriNetUnfolderBase]: For 177683/177683 co-relation queries the response was YES. [2024-06-27 23:09:03,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 1028 events. 547/1028 cut-off events. For 177683/177683 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5595 event pairs, 39 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 9953. Up to 443 conditions per place. [2024-06-27 23:09:03,217 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 142 changer transitions 0/297 dead transitions. [2024-06-27 23:09:03,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 297 transitions, 4971 flow [2024-06-27 23:09:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:09:03,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-27 23:09:03,218 INFO L175 Difference]: Start difference. First operand has 292 places, 279 transitions, 3585 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:09:03,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 297 transitions, 4971 flow [2024-06-27 23:09:03,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 297 transitions, 4578 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-27 23:09:03,703 INFO L231 Difference]: Finished difference. Result has 296 places, 282 transitions, 3566 flow [2024-06-27 23:09:03,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3566, PETRI_PLACES=296, PETRI_TRANSITIONS=282} [2024-06-27 23:09:03,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-27 23:09:03,710 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 282 transitions, 3566 flow [2024-06-27 23:09:03,710 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 23:09:03,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:03,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:03,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:09:03,710 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 23:09:03,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1525830565, now seen corresponding path program 13 times [2024-06-27 23:09:03,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:03,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609944068] [2024-06-27 23:09:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609944068] [2024-06-27 23:09:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609944068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:06,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651903608] [2024-06-27 23:09:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:06,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:06,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 282 transitions, 3566 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 23:09:06,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:06,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:06,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:07,689 INFO L124 PetriNetUnfolderBase]: 550/1036 cut-off events. [2024-06-27 23:09:07,690 INFO L125 PetriNetUnfolderBase]: For 173153/173153 co-relation queries the response was YES. [2024-06-27 23:09:07,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9965 conditions, 1036 events. 550/1036 cut-off events. For 173153/173153 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5677 event pairs, 48 based on Foata normal form. 1/1036 useless extension candidates. Maximal degree in co-relation 9827. Up to 448 conditions per place. [2024-06-27 23:09:07,701 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 150 changer transitions 0/301 dead transitions. [2024-06-27 23:09:07,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 301 transitions, 4988 flow [2024-06-27 23:09:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:09:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:09:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 23:09:07,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910394265232975 [2024-06-27 23:09:07,702 INFO L175 Difference]: Start difference. First operand has 296 places, 282 transitions, 3566 flow. Second operand 9 states and 137 transitions. [2024-06-27 23:09:07,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 301 transitions, 4988 flow [2024-06-27 23:09:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 301 transitions, 4659 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 23:09:08,194 INFO L231 Difference]: Finished difference. Result has 299 places, 287 transitions, 3698 flow [2024-06-27 23:09:08,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3698, PETRI_PLACES=299, PETRI_TRANSITIONS=287} [2024-06-27 23:09:08,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-27 23:09:08,195 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 287 transitions, 3698 flow [2024-06-27 23:09:08,195 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 23:09:08,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:08,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:08,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:09:08,196 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 23:09:08,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:08,196 INFO L85 PathProgramCache]: Analyzing trace with hash -893661383, now seen corresponding path program 14 times [2024-06-27 23:09:08,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:08,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746195774] [2024-06-27 23:09:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746195774] [2024-06-27 23:09:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746195774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:10,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:10,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:10,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798084688] [2024-06-27 23:09:10,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:10,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:10,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:10,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:10,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:10,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:10,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 287 transitions, 3698 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 23:09:10,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:10,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:10,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:11,060 INFO L124 PetriNetUnfolderBase]: 557/1050 cut-off events. [2024-06-27 23:09:11,061 INFO L125 PetriNetUnfolderBase]: For 182710/182710 co-relation queries the response was YES. [2024-06-27 23:09:11,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1050 events. 557/1050 cut-off events. For 182710/182710 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5775 event pairs, 49 based on Foata normal form. 2/1051 useless extension candidates. Maximal degree in co-relation 10026. Up to 812 conditions per place. [2024-06-27 23:09:11,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 63 changer transitions 0/301 dead transitions. [2024-06-27 23:09:11,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 301 transitions, 4638 flow [2024-06-27 23:09:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:09:11,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-27 23:09:11,073 INFO L175 Difference]: Start difference. First operand has 299 places, 287 transitions, 3698 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:09:11,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 301 transitions, 4638 flow [2024-06-27 23:09:11,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 301 transitions, 4313 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 23:09:11,629 INFO L231 Difference]: Finished difference. Result has 304 places, 290 transitions, 3590 flow [2024-06-27 23:09:11,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3590, PETRI_PLACES=304, PETRI_TRANSITIONS=290} [2024-06-27 23:09:11,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 23:09:11,630 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 290 transitions, 3590 flow [2024-06-27 23:09:11,630 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 23:09:11,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:11,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:11,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:09:11,631 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 23:09:11,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1517549597, now seen corresponding path program 6 times [2024-06-27 23:09:11,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:11,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237319984] [2024-06-27 23:09:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:11,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237319984] [2024-06-27 23:09:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237319984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:13,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:13,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980236993] [2024-06-27 23:09:13,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:13,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:13,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:14,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:14,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 290 transitions, 3590 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 23:09:14,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:14,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:14,542 INFO L124 PetriNetUnfolderBase]: 560/1055 cut-off events. [2024-06-27 23:09:14,542 INFO L125 PetriNetUnfolderBase]: For 184298/184298 co-relation queries the response was YES. [2024-06-27 23:09:14,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10010 conditions, 1055 events. 560/1055 cut-off events. For 184298/184298 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5791 event pairs, 59 based on Foata normal form. 1/1055 useless extension candidates. Maximal degree in co-relation 9869. Up to 946 conditions per place. [2024-06-27 23:09:14,554 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 18 changer transitions 0/301 dead transitions. [2024-06-27 23:09:14,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 301 transitions, 4241 flow [2024-06-27 23:09:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:09:14,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:09:14,555 INFO L175 Difference]: Start difference. First operand has 304 places, 290 transitions, 3590 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:09:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 301 transitions, 4241 flow [2024-06-27 23:09:14,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 301 transitions, 3982 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-27 23:09:14,990 INFO L231 Difference]: Finished difference. Result has 304 places, 292 transitions, 3411 flow [2024-06-27 23:09:14,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3331, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3411, PETRI_PLACES=304, PETRI_TRANSITIONS=292} [2024-06-27 23:09:14,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 23:09:14,990 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 292 transitions, 3411 flow [2024-06-27 23:09:14,991 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 23:09:14,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:14,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:09:14,991 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 23:09:14,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -887405025, now seen corresponding path program 7 times [2024-06-27 23:09:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73099215] [2024-06-27 23:09:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73099215] [2024-06-27 23:09:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73099215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:16,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:09:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074456959] [2024-06-27 23:09:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:16,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:09:16,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:09:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:09:17,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:09:17,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 292 transitions, 3411 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 23:09:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:17,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:09:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:17,358 INFO L124 PetriNetUnfolderBase]: 563/1060 cut-off events. [2024-06-27 23:09:17,358 INFO L125 PetriNetUnfolderBase]: For 186629/186629 co-relation queries the response was YES. [2024-06-27 23:09:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9773 conditions, 1060 events. 563/1060 cut-off events. For 186629/186629 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5842 event pairs, 38 based on Foata normal form. 1/1060 useless extension candidates. Maximal degree in co-relation 9634. Up to 831 conditions per place. [2024-06-27 23:09:17,370 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 64 changer transitions 0/303 dead transitions. [2024-06-27 23:09:17,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 303 transitions, 4068 flow [2024-06-27 23:09:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:09:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:09:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 23:09:17,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2024-06-27 23:09:17,373 INFO L175 Difference]: Start difference. First operand has 304 places, 292 transitions, 3411 flow. Second operand 9 states and 136 transitions. [2024-06-27 23:09:17,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 303 transitions, 4068 flow [2024-06-27 23:09:17,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 303 transitions, 4017 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:17,830 INFO L231 Difference]: Finished difference. Result has 305 places, 294 transitions, 3536 flow [2024-06-27 23:09:17,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3536, PETRI_PLACES=305, PETRI_TRANSITIONS=294} [2024-06-27 23:09:17,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 23:09:17,830 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 294 transitions, 3536 flow [2024-06-27 23:09:17,831 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 23:09:17,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:17,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:17,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:09:17,831 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 23:09:17,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:17,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1256139711, now seen corresponding path program 15 times [2024-06-27 23:09:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:17,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420534673] [2024-06-27 23:09:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:19,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:19,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420534673] [2024-06-27 23:09:19,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420534673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:19,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:19,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983707249] [2024-06-27 23:09:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:19,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:19,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 294 transitions, 3536 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 23:09:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:20,459 INFO L124 PetriNetUnfolderBase]: 566/1067 cut-off events. [2024-06-27 23:09:20,459 INFO L125 PetriNetUnfolderBase]: For 191151/191151 co-relation queries the response was YES. [2024-06-27 23:09:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 1067 events. 566/1067 cut-off events. For 191151/191151 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5899 event pairs, 37 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 9819. Up to 816 conditions per place. [2024-06-27 23:09:20,472 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 72 changer transitions 0/311 dead transitions. [2024-06-27 23:09:20,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 4726 flow [2024-06-27 23:09:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:20,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:09:20,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:09:20,476 INFO L175 Difference]: Start difference. First operand has 305 places, 294 transitions, 3536 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:09:20,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 4726 flow [2024-06-27 23:09:21,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 311 transitions, 4577 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:09:21,038 INFO L231 Difference]: Finished difference. Result has 309 places, 300 transitions, 3701 flow [2024-06-27 23:09:21,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3701, PETRI_PLACES=309, PETRI_TRANSITIONS=300} [2024-06-27 23:09:21,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-27 23:09:21,039 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 300 transitions, 3701 flow [2024-06-27 23:09:21,039 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 23:09:21,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:21,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:21,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:09:21,040 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 23:09:21,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -887174385, now seen corresponding path program 8 times [2024-06-27 23:09:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090696589] [2024-06-27 23:09:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:21,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:23,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:23,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090696589] [2024-06-27 23:09:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090696589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:23,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:09:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008274858] [2024-06-27 23:09:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:09:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:09:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:09:23,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:09:23,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 300 transitions, 3701 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 23:09:23,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:23,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:09:23,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:23,477 INFO L124 PetriNetUnfolderBase]: 569/1072 cut-off events. [2024-06-27 23:09:23,477 INFO L125 PetriNetUnfolderBase]: For 195807/195807 co-relation queries the response was YES. [2024-06-27 23:09:23,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10091 conditions, 1072 events. 569/1072 cut-off events. For 195807/195807 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5922 event pairs, 37 based on Foata normal form. 1/1072 useless extension candidates. Maximal degree in co-relation 9949. Up to 841 conditions per place. [2024-06-27 23:09:23,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 66 changer transitions 0/311 dead transitions. [2024-06-27 23:09:23,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 311 transitions, 4378 flow [2024-06-27 23:09:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:09:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:09:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 23:09:23,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2024-06-27 23:09:23,490 INFO L175 Difference]: Start difference. First operand has 309 places, 300 transitions, 3701 flow. Second operand 9 states and 136 transitions. [2024-06-27 23:09:23,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 311 transitions, 4378 flow [2024-06-27 23:09:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 311 transitions, 4264 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:09:24,009 INFO L231 Difference]: Finished difference. Result has 313 places, 302 transitions, 3771 flow [2024-06-27 23:09:24,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3771, PETRI_PLACES=313, PETRI_TRANSITIONS=302} [2024-06-27 23:09:24,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-27 23:09:24,012 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 302 transitions, 3771 flow [2024-06-27 23:09:24,012 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 23:09:24,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:24,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:09:24,012 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 23:09:24,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash -657486023, now seen corresponding path program 16 times [2024-06-27 23:09:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329309489] [2024-06-27 23:09:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:25,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329309489] [2024-06-27 23:09:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329309489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217788567] [2024-06-27 23:09:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:25,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:25,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 302 transitions, 3771 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 23:09:25,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:25,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:26,482 INFO L124 PetriNetUnfolderBase]: 566/1069 cut-off events. [2024-06-27 23:09:26,483 INFO L125 PetriNetUnfolderBase]: For 191677/191677 co-relation queries the response was YES. [2024-06-27 23:09:26,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9952 conditions, 1069 events. 566/1069 cut-off events. For 191677/191677 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5924 event pairs, 67 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 9808. Up to 929 conditions per place. [2024-06-27 23:09:26,494 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 281 selfloop transitions, 28 changer transitions 0/312 dead transitions. [2024-06-27 23:09:26,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 312 transitions, 4619 flow [2024-06-27 23:09:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:09:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:09:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:09:26,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:09:26,495 INFO L175 Difference]: Start difference. First operand has 313 places, 302 transitions, 3771 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:09:26,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 312 transitions, 4619 flow [2024-06-27 23:09:27,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 312 transitions, 4416 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 23:09:27,010 INFO L231 Difference]: Finished difference. Result has 317 places, 302 transitions, 3632 flow [2024-06-27 23:09:27,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3632, PETRI_PLACES=317, PETRI_TRANSITIONS=302} [2024-06-27 23:09:27,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 23:09:27,011 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 302 transitions, 3632 flow [2024-06-27 23:09:27,011 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 23:09:27,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:27,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:09:27,012 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 23:09:27,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash -893661135, now seen corresponding path program 9 times [2024-06-27 23:09:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:27,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581312510] [2024-06-27 23:09:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:28,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:28,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:28,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581312510] [2024-06-27 23:09:28,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581312510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:28,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:28,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:28,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727215870] [2024-06-27 23:09:28,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:28,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:28,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:29,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:29,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 302 transitions, 3632 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 23:09:29,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:29,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:29,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:29,368 INFO L124 PetriNetUnfolderBase]: 566/1068 cut-off events. [2024-06-27 23:09:29,368 INFO L125 PetriNetUnfolderBase]: For 192246/192246 co-relation queries the response was YES. [2024-06-27 23:09:29,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9727 conditions, 1068 events. 566/1068 cut-off events. For 192246/192246 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5908 event pairs, 36 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 9581. Up to 849 conditions per place. [2024-06-27 23:09:29,380 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 249 selfloop transitions, 61 changer transitions 0/313 dead transitions. [2024-06-27 23:09:29,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 313 transitions, 4308 flow [2024-06-27 23:09:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:09:29,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:09:29,382 INFO L175 Difference]: Start difference. First operand has 317 places, 302 transitions, 3632 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:09:29,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 313 transitions, 4308 flow [2024-06-27 23:09:29,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 313 transitions, 4207 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:09:29,925 INFO L231 Difference]: Finished difference. Result has 316 places, 304 transitions, 3701 flow [2024-06-27 23:09:29,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3701, PETRI_PLACES=316, PETRI_TRANSITIONS=304} [2024-06-27 23:09:29,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-27 23:09:29,925 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 304 transitions, 3701 flow [2024-06-27 23:09:29,925 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 23:09:29,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:29,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:29,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:09:29,926 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 23:09:29,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1249877091, now seen corresponding path program 17 times [2024-06-27 23:09:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:29,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134900485] [2024-06-27 23:09:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134900485] [2024-06-27 23:09:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134900485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:32,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539076658] [2024-06-27 23:09:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:32,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:32,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:32,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 304 transitions, 3701 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 23:09:32,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:32,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:33,167 INFO L124 PetriNetUnfolderBase]: 564/1065 cut-off events. [2024-06-27 23:09:33,168 INFO L125 PetriNetUnfolderBase]: For 182504/182504 co-relation queries the response was YES. [2024-06-27 23:09:33,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9659 conditions, 1065 events. 564/1065 cut-off events. For 182504/182504 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5903 event pairs, 46 based on Foata normal form. 1/1065 useless extension candidates. Maximal degree in co-relation 9512. Up to 843 conditions per place. [2024-06-27 23:09:33,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 61 changer transitions 0/313 dead transitions. [2024-06-27 23:09:33,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 313 transitions, 4341 flow [2024-06-27 23:09:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:09:33,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:09:33,181 INFO L175 Difference]: Start difference. First operand has 316 places, 304 transitions, 3701 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:09:33,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 313 transitions, 4341 flow [2024-06-27 23:09:33,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 313 transitions, 4141 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:33,726 INFO L231 Difference]: Finished difference. Result has 318 places, 304 transitions, 3628 flow [2024-06-27 23:09:33,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3628, PETRI_PLACES=318, PETRI_TRANSITIONS=304} [2024-06-27 23:09:33,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-27 23:09:33,727 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 304 transitions, 3628 flow [2024-06-27 23:09:33,727 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 23:09:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:33,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:09:33,727 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 23:09:33,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -887165705, now seen corresponding path program 3 times [2024-06-27 23:09:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:33,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92567801] [2024-06-27 23:09:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:33,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92567801] [2024-06-27 23:09:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92567801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719656914] [2024-06-27 23:09:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:36,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:36,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:36,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 304 transitions, 3628 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 23:09:36,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:36,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:36,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:37,233 INFO L124 PetriNetUnfolderBase]: 568/1072 cut-off events. [2024-06-27 23:09:37,233 INFO L125 PetriNetUnfolderBase]: For 193939/193939 co-relation queries the response was YES. [2024-06-27 23:09:37,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9686 conditions, 1072 events. 568/1072 cut-off events. For 193939/193939 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5958 event pairs, 32 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 9538. Up to 942 conditions per place. [2024-06-27 23:09:37,246 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 289 selfloop transitions, 23 changer transitions 0/315 dead transitions. [2024-06-27 23:09:37,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 315 transitions, 4304 flow [2024-06-27 23:09:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:09:37,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 23:09:37,248 INFO L175 Difference]: Start difference. First operand has 318 places, 304 transitions, 3628 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:09:37,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 315 transitions, 4304 flow [2024-06-27 23:09:37,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 315 transitions, 4164 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:37,741 INFO L231 Difference]: Finished difference. Result has 320 places, 305 transitions, 3570 flow [2024-06-27 23:09:37,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3488, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3570, PETRI_PLACES=320, PETRI_TRANSITIONS=305} [2024-06-27 23:09:37,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-27 23:09:37,742 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 305 transitions, 3570 flow [2024-06-27 23:09:37,742 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 23:09:37,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:37,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:09:37,743 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 23:09:37,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -657477405, now seen corresponding path program 10 times [2024-06-27 23:09:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321241066] [2024-06-27 23:09:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321241066] [2024-06-27 23:09:40,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321241066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:40,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:40,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:40,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491640465] [2024-06-27 23:09:40,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:40,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:40,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:40,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:40,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 305 transitions, 3570 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 23:09:40,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:40,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:40,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:41,390 INFO L124 PetriNetUnfolderBase]: 571/1078 cut-off events. [2024-06-27 23:09:41,391 INFO L125 PetriNetUnfolderBase]: For 190401/190401 co-relation queries the response was YES. [2024-06-27 23:09:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9679 conditions, 1078 events. 571/1078 cut-off events. For 190401/190401 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5971 event pairs, 58 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 9530. Up to 961 conditions per place. [2024-06-27 23:09:41,401 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 292 selfloop transitions, 21 changer transitions 0/316 dead transitions. [2024-06-27 23:09:41,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 316 transitions, 4254 flow [2024-06-27 23:09:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:09:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:09:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:09:41,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:09:41,402 INFO L175 Difference]: Start difference. First operand has 320 places, 305 transitions, 3570 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:09:41,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 316 transitions, 4254 flow [2024-06-27 23:09:41,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 316 transitions, 4182 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:41,887 INFO L231 Difference]: Finished difference. Result has 323 places, 307 transitions, 3587 flow [2024-06-27 23:09:41,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3587, PETRI_PLACES=323, PETRI_TRANSITIONS=307} [2024-06-27 23:09:41,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 23:09:41,888 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 307 transitions, 3587 flow [2024-06-27 23:09:41,888 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 23:09:41,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:41,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:09:41,888 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 23:09:41,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1240484617, now seen corresponding path program 4 times [2024-06-27 23:09:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199728986] [2024-06-27 23:09:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:45,591 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 23:09:45,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:45,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199728986] [2024-06-27 23:09:45,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199728986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:45,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:45,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:45,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829413710] [2024-06-27 23:09:45,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:45,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:45,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:45,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 307 transitions, 3587 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 23:09:45,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:45,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:45,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:46,418 INFO L124 PetriNetUnfolderBase]: 575/1086 cut-off events. [2024-06-27 23:09:46,419 INFO L125 PetriNetUnfolderBase]: For 200859/200859 co-relation queries the response was YES. [2024-06-27 23:09:46,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9735 conditions, 1086 events. 575/1086 cut-off events. For 200859/200859 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6046 event pairs, 57 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 9585. Up to 972 conditions per place. [2024-06-27 23:09:46,429 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2024-06-27 23:09:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 318 transitions, 4271 flow [2024-06-27 23:09:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:09:46,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 23:09:46,430 INFO L175 Difference]: Start difference. First operand has 323 places, 307 transitions, 3587 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:09:46,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 318 transitions, 4271 flow [2024-06-27 23:09:46,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 318 transitions, 4212 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:09:46,971 INFO L231 Difference]: Finished difference. Result has 324 places, 308 transitions, 3600 flow [2024-06-27 23:09:46,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3528, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3600, PETRI_PLACES=324, PETRI_TRANSITIONS=308} [2024-06-27 23:09:46,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-27 23:09:46,972 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 308 transitions, 3600 flow [2024-06-27 23:09:46,972 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 23:09:46,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:46,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:09:46,972 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 23:09:46,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -887166015, now seen corresponding path program 11 times [2024-06-27 23:09:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:46,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453254996] [2024-06-27 23:09:46,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:46,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453254996] [2024-06-27 23:09:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453254996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:49,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998782075] [2024-06-27 23:09:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:49,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:49,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:49,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:09:49,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 308 transitions, 3600 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 23:09:49,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:49,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:09:49,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:49,861 INFO L124 PetriNetUnfolderBase]: 573/1083 cut-off events. [2024-06-27 23:09:49,861 INFO L125 PetriNetUnfolderBase]: For 192281/192281 co-relation queries the response was YES. [2024-06-27 23:09:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9615 conditions, 1083 events. 573/1083 cut-off events. For 192281/192281 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6008 event pairs, 36 based on Foata normal form. 1/1083 useless extension candidates. Maximal degree in co-relation 9464. Up to 864 conditions per place. [2024-06-27 23:09:49,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 64 changer transitions 0/317 dead transitions. [2024-06-27 23:09:49,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 317 transitions, 4248 flow [2024-06-27 23:09:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:09:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:09:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:09:49,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:09:49,875 INFO L175 Difference]: Start difference. First operand has 324 places, 308 transitions, 3600 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:09:49,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 317 transitions, 4248 flow [2024-06-27 23:09:50,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 317 transitions, 4180 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:50,470 INFO L231 Difference]: Finished difference. Result has 326 places, 308 transitions, 3665 flow [2024-06-27 23:09:50,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3665, PETRI_PLACES=326, PETRI_TRANSITIONS=308} [2024-06-27 23:09:50,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-27 23:09:50,471 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 308 transitions, 3665 flow [2024-06-27 23:09:50,471 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 23:09:50,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:50,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:50,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:09:50,471 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 23:09:50,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1230365597, now seen corresponding path program 12 times [2024-06-27 23:09:50,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:50,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597003944] [2024-06-27 23:09:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:50,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:53,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:53,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597003944] [2024-06-27 23:09:53,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597003944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:53,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:53,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:09:53,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419764323] [2024-06-27 23:09:53,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:53,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:09:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:09:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:09:53,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:53,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 308 transitions, 3665 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 23:09:53,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:53,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:53,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:54,381 INFO L124 PetriNetUnfolderBase]: 570/1077 cut-off events. [2024-06-27 23:09:54,382 INFO L125 PetriNetUnfolderBase]: For 189259/189259 co-relation queries the response was YES. [2024-06-27 23:09:54,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 1077 events. 570/1077 cut-off events. For 189259/189259 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6001 event pairs, 57 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 9386. Up to 952 conditions per place. [2024-06-27 23:09:54,393 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 26 changer transitions 0/318 dead transitions. [2024-06-27 23:09:54,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 318 transitions, 4317 flow [2024-06-27 23:09:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:09:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:09:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:09:54,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 23:09:54,394 INFO L175 Difference]: Start difference. First operand has 326 places, 308 transitions, 3665 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:09:54,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 318 transitions, 4317 flow [2024-06-27 23:09:54,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 318 transitions, 4105 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:09:54,955 INFO L231 Difference]: Finished difference. Result has 329 places, 308 transitions, 3510 flow [2024-06-27 23:09:54,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3510, PETRI_PLACES=329, PETRI_TRANSITIONS=308} [2024-06-27 23:09:54,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-27 23:09:54,956 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 308 transitions, 3510 flow [2024-06-27 23:09:54,956 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 23:09:54,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:54,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:54,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:09:54,956 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 23:09:54,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 913179697, now seen corresponding path program 5 times [2024-06-27 23:09:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673226733] [2024-06-27 23:09:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:09:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:09:58,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:09:58,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673226733] [2024-06-27 23:09:58,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673226733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:09:58,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:09:58,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:09:58,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014992546] [2024-06-27 23:09:58,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:09:58,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:09:58,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:09:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:09:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:09:58,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:09:58,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 308 transitions, 3510 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 23:09:58,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:09:58,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:09:58,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:09:59,316 INFO L124 PetriNetUnfolderBase]: 574/1085 cut-off events. [2024-06-27 23:09:59,316 INFO L125 PetriNetUnfolderBase]: For 198766/198766 co-relation queries the response was YES. [2024-06-27 23:09:59,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 1085 events. 574/1085 cut-off events. For 198766/198766 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6039 event pairs, 59 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 9361. Up to 966 conditions per place. [2024-06-27 23:09:59,328 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 296 selfloop transitions, 21 changer transitions 0/320 dead transitions. [2024-06-27 23:09:59,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 320 transitions, 4202 flow [2024-06-27 23:09:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:09:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:09:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:09:59,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 23:09:59,330 INFO L175 Difference]: Start difference. First operand has 329 places, 308 transitions, 3510 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:09:59,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 320 transitions, 4202 flow [2024-06-27 23:09:59,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 320 transitions, 4111 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:09:59,951 INFO L231 Difference]: Finished difference. Result has 330 places, 309 transitions, 3501 flow [2024-06-27 23:09:59,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3501, PETRI_PLACES=330, PETRI_TRANSITIONS=309} [2024-06-27 23:09:59,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 23:09:59,954 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 309 transitions, 3501 flow [2024-06-27 23:09:59,954 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 23:09:59,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:09:59,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:09:59,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:09:59,955 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 23:09:59,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:09:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1230009097, now seen corresponding path program 6 times [2024-06-27 23:09:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:09:59,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454097309] [2024-06-27 23:09:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:09:59,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:09:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:02,530 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 23:10:02,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:02,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454097309] [2024-06-27 23:10:02,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454097309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:02,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:02,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560217633] [2024-06-27 23:10:02,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:02,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:02,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:02,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 309 transitions, 3501 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 23:10:02,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:02,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:02,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:03,218 INFO L124 PetriNetUnfolderBase]: 571/1080 cut-off events. [2024-06-27 23:10:03,218 INFO L125 PetriNetUnfolderBase]: For 189465/189465 co-relation queries the response was YES. [2024-06-27 23:10:03,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9250 conditions, 1080 events. 571/1080 cut-off events. For 189465/189465 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6020 event pairs, 56 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 9096. Up to 941 conditions per place. [2024-06-27 23:10:03,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 23 changer transitions 0/321 dead transitions. [2024-06-27 23:10:03,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 321 transitions, 4163 flow [2024-06-27 23:10:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:10:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:10:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 23:10:03,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-27 23:10:03,232 INFO L175 Difference]: Start difference. First operand has 330 places, 309 transitions, 3501 flow. Second operand 12 states and 133 transitions. [2024-06-27 23:10:03,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 321 transitions, 4163 flow [2024-06-27 23:10:03,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 321 transitions, 4091 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 23:10:03,814 INFO L231 Difference]: Finished difference. Result has 332 places, 309 transitions, 3479 flow [2024-06-27 23:10:03,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3479, PETRI_PLACES=332, PETRI_TRANSITIONS=309} [2024-06-27 23:10:03,814 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-27 23:10:03,815 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 309 transitions, 3479 flow [2024-06-27 23:10:03,815 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 23:10:03,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:03,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:10:03,815 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 23:10:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -887174633, now seen corresponding path program 18 times [2024-06-27 23:10:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533598415] [2024-06-27 23:10:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:03,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:05,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533598415] [2024-06-27 23:10:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533598415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:05,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:05,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636738718] [2024-06-27 23:10:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:05,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:05,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:05,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:10:05,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 309 transitions, 3479 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 23:10:05,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:05,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:10:05,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:06,600 INFO L124 PetriNetUnfolderBase]: 569/1077 cut-off events. [2024-06-27 23:10:06,600 INFO L125 PetriNetUnfolderBase]: For 179290/179290 co-relation queries the response was YES. [2024-06-27 23:10:06,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 1077 events. 569/1077 cut-off events. For 179290/179290 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6004 event pairs, 37 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 8930. Up to 829 conditions per place. [2024-06-27 23:10:06,613 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 75 changer transitions 0/318 dead transitions. [2024-06-27 23:10:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 318 transitions, 4129 flow [2024-06-27 23:10:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:10:06,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-27 23:10:06,614 INFO L175 Difference]: Start difference. First operand has 332 places, 309 transitions, 3479 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:10:06,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 318 transitions, 4129 flow [2024-06-27 23:10:07,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 318 transitions, 3971 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-27 23:10:07,172 INFO L231 Difference]: Finished difference. Result has 330 places, 309 transitions, 3476 flow [2024-06-27 23:10:07,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3476, PETRI_PLACES=330, PETRI_TRANSITIONS=309} [2024-06-27 23:10:07,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-27 23:10:07,172 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 309 transitions, 3476 flow [2024-06-27 23:10:07,173 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 23:10:07,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:07,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:07,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:10:07,173 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 23:10:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 698882417, now seen corresponding path program 6 times [2024-06-27 23:10:07,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527479174] [2024-06-27 23:10:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:07,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:07,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527479174] [2024-06-27 23:10:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527479174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:08,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945602494] [2024-06-27 23:10:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:08,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:08,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:08,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:08,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:08,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 309 transitions, 3476 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 23:10:08,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:08,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:08,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:08,503 INFO L124 PetriNetUnfolderBase]: 578/1098 cut-off events. [2024-06-27 23:10:08,504 INFO L125 PetriNetUnfolderBase]: For 188845/188845 co-relation queries the response was YES. [2024-06-27 23:10:08,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9188 conditions, 1098 events. 578/1098 cut-off events. For 188845/188845 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6180 event pairs, 30 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 9033. Up to 938 conditions per place. [2024-06-27 23:10:08,516 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 298 selfloop transitions, 29 changer transitions 0/330 dead transitions. [2024-06-27 23:10:08,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 330 transitions, 4216 flow [2024-06-27 23:10:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:10:08,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:10:08,517 INFO L175 Difference]: Start difference. First operand has 330 places, 309 transitions, 3476 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:10:08,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 330 transitions, 4216 flow [2024-06-27 23:10:09,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 330 transitions, 4046 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:10:09,008 INFO L231 Difference]: Finished difference. Result has 331 places, 311 transitions, 3410 flow [2024-06-27 23:10:09,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3410, PETRI_PLACES=331, PETRI_TRANSITIONS=311} [2024-06-27 23:10:09,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-27 23:10:09,009 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 311 transitions, 3410 flow [2024-06-27 23:10:09,009 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 23:10:09,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:09,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:09,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:10:09,009 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 23:10:09,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1526982461, now seen corresponding path program 7 times [2024-06-27 23:10:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469263509] [2024-06-27 23:10:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:09,943 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 23:10:09,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:09,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469263509] [2024-06-27 23:10:09,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469263509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:09,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:09,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:09,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690969107] [2024-06-27 23:10:09,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:09,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:09,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:10,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 311 transitions, 3410 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 23:10:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:10,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:10,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:10,451 INFO L124 PetriNetUnfolderBase]: 582/1106 cut-off events. [2024-06-27 23:10:10,452 INFO L125 PetriNetUnfolderBase]: For 192225/192225 co-relation queries the response was YES. [2024-06-27 23:10:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9159 conditions, 1106 events. 582/1106 cut-off events. For 192225/192225 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6255 event pairs, 36 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 9004. Up to 955 conditions per place. [2024-06-27 23:10:10,464 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 30 changer transitions 0/329 dead transitions. [2024-06-27 23:10:10,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 329 transitions, 4136 flow [2024-06-27 23:10:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:10:10,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:10:10,465 INFO L175 Difference]: Start difference. First operand has 331 places, 311 transitions, 3410 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:10:10,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 329 transitions, 4136 flow [2024-06-27 23:10:11,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 329 transitions, 4054 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:10:11,003 INFO L231 Difference]: Finished difference. Result has 334 places, 312 transitions, 3424 flow [2024-06-27 23:10:11,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3424, PETRI_PLACES=334, PETRI_TRANSITIONS=312} [2024-06-27 23:10:11,004 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-27 23:10:11,004 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 312 transitions, 3424 flow [2024-06-27 23:10:11,005 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 23:10:11,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:11,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:10:11,005 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 23:10:11,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash 554286359, now seen corresponding path program 8 times [2024-06-27 23:10:11,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:11,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723002338] [2024-06-27 23:10:11,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:11,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723002338] [2024-06-27 23:10:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723002338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:10:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401593843] [2024-06-27 23:10:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:10:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:10:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:10:11,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:10:11,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 312 transitions, 3424 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 23:10:11,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:11,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:10:11,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:12,307 INFO L124 PetriNetUnfolderBase]: 560/1091 cut-off events. [2024-06-27 23:10:12,307 INFO L125 PetriNetUnfolderBase]: For 197720/197723 co-relation queries the response was YES. [2024-06-27 23:10:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8853 conditions, 1091 events. 560/1091 cut-off events. For 197720/197723 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6347 event pairs, 16 based on Foata normal form. 4/1090 useless extension candidates. Maximal degree in co-relation 8697. Up to 637 conditions per place. [2024-06-27 23:10:12,320 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 182 selfloop transitions, 31 changer transitions 0/330 dead transitions. [2024-06-27 23:10:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 330 transitions, 3930 flow [2024-06-27 23:10:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:10:12,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:10:12,322 INFO L175 Difference]: Start difference. First operand has 334 places, 312 transitions, 3424 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:10:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 330 transitions, 3930 flow [2024-06-27 23:10:12,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 330 transitions, 3844 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:12,986 INFO L231 Difference]: Finished difference. Result has 335 places, 314 transitions, 3451 flow [2024-06-27 23:10:12,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3451, PETRI_PLACES=335, PETRI_TRANSITIONS=314} [2024-06-27 23:10:12,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-27 23:10:12,986 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 314 transitions, 3451 flow [2024-06-27 23:10:12,986 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 23:10:12,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:12,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:10:12,987 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 23:10:12,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 504374069, now seen corresponding path program 9 times [2024-06-27 23:10:12,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:12,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993735010] [2024-06-27 23:10:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:14,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993735010] [2024-06-27 23:10:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993735010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507149924] [2024-06-27 23:10:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:14,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:14,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 314 transitions, 3451 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 23:10:14,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:14,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:14,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:14,664 INFO L124 PetriNetUnfolderBase]: 600/1144 cut-off events. [2024-06-27 23:10:14,665 INFO L125 PetriNetUnfolderBase]: For 199202/199202 co-relation queries the response was YES. [2024-06-27 23:10:14,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 1144 events. 600/1144 cut-off events. For 199202/199202 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6570 event pairs, 41 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 9229. Up to 984 conditions per place. [2024-06-27 23:10:14,679 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 304 selfloop transitions, 27 changer transitions 0/334 dead transitions. [2024-06-27 23:10:14,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 334 transitions, 4205 flow [2024-06-27 23:10:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:10:14,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-27 23:10:14,681 INFO L175 Difference]: Start difference. First operand has 335 places, 314 transitions, 3451 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:10:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 334 transitions, 4205 flow [2024-06-27 23:10:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 334 transitions, 4120 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:10:15,281 INFO L231 Difference]: Finished difference. Result has 340 places, 316 transitions, 3474 flow [2024-06-27 23:10:15,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3474, PETRI_PLACES=340, PETRI_TRANSITIONS=316} [2024-06-27 23:10:15,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-27 23:10:15,282 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 316 transitions, 3474 flow [2024-06-27 23:10:15,282 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 23:10:15,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:15,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:15,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:10:15,283 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 23:10:15,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash 592671059, now seen corresponding path program 10 times [2024-06-27 23:10:15,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:15,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572114792] [2024-06-27 23:10:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572114792] [2024-06-27 23:10:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572114792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138250947] [2024-06-27 23:10:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:16,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:16,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:16,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 316 transitions, 3474 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 23:10:16,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:16,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:16,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:17,363 INFO L124 PetriNetUnfolderBase]: 604/1152 cut-off events. [2024-06-27 23:10:17,364 INFO L125 PetriNetUnfolderBase]: For 192730/192730 co-relation queries the response was YES. [2024-06-27 23:10:17,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9352 conditions, 1152 events. 604/1152 cut-off events. For 192730/192730 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6635 event pairs, 46 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 9194. Up to 1001 conditions per place. [2024-06-27 23:10:17,375 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 302 selfloop transitions, 28 changer transitions 0/333 dead transitions. [2024-06-27 23:10:17,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 333 transitions, 4208 flow [2024-06-27 23:10:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:10:17,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:10:17,376 INFO L175 Difference]: Start difference. First operand has 340 places, 316 transitions, 3474 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:10:17,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 333 transitions, 4208 flow [2024-06-27 23:10:17,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 333 transitions, 4128 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:10:17,933 INFO L231 Difference]: Finished difference. Result has 343 places, 317 transitions, 3488 flow [2024-06-27 23:10:17,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3488, PETRI_PLACES=343, PETRI_TRANSITIONS=317} [2024-06-27 23:10:17,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-27 23:10:17,934 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 317 transitions, 3488 flow [2024-06-27 23:10:17,934 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 23:10:17,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:17,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:17,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:10:17,934 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 23:10:17,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash 357175955, now seen corresponding path program 11 times [2024-06-27 23:10:17,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:17,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413203930] [2024-06-27 23:10:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:17,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413203930] [2024-06-27 23:10:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413203930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237243903] [2024-06-27 23:10:19,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:19,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:19,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:19,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:19,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:19,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 317 transitions, 3488 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 23:10:19,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:19,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:19,913 INFO L124 PetriNetUnfolderBase]: 608/1159 cut-off events. [2024-06-27 23:10:19,914 INFO L125 PetriNetUnfolderBase]: For 196219/196219 co-relation queries the response was YES. [2024-06-27 23:10:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9415 conditions, 1159 events. 608/1159 cut-off events. For 196219/196219 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6673 event pairs, 42 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 9256. Up to 1000 conditions per place. [2024-06-27 23:10:19,928 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 33 changer transitions 0/333 dead transitions. [2024-06-27 23:10:19,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 333 transitions, 4220 flow [2024-06-27 23:10:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:10:19,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:10:19,930 INFO L175 Difference]: Start difference. First operand has 343 places, 317 transitions, 3488 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:10:19,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 333 transitions, 4220 flow [2024-06-27 23:10:20,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 333 transitions, 4136 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:20,518 INFO L231 Difference]: Finished difference. Result has 345 places, 318 transitions, 3510 flow [2024-06-27 23:10:20,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3510, PETRI_PLACES=345, PETRI_TRANSITIONS=318} [2024-06-27 23:10:20,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-27 23:10:20,518 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 318 transitions, 3510 flow [2024-06-27 23:10:20,519 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 23:10:20,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:20,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:10:20,519 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 23:10:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash -373983021, now seen corresponding path program 12 times [2024-06-27 23:10:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658721931] [2024-06-27 23:10:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:21,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658721931] [2024-06-27 23:10:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658721931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:21,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:21,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494348425] [2024-06-27 23:10:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:21,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:21,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:21,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:21,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:21,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 318 transitions, 3510 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 23:10:21,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:21,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:21,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:22,421 INFO L124 PetriNetUnfolderBase]: 612/1167 cut-off events. [2024-06-27 23:10:22,421 INFO L125 PetriNetUnfolderBase]: For 199477/199477 co-relation queries the response was YES. [2024-06-27 23:10:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1167 events. 612/1167 cut-off events. For 199477/199477 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6715 event pairs, 35 based on Foata normal form. 2/1168 useless extension candidates. Maximal degree in co-relation 9327. Up to 1017 conditions per place. [2024-06-27 23:10:22,436 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 304 selfloop transitions, 27 changer transitions 0/334 dead transitions. [2024-06-27 23:10:22,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 334 transitions, 4248 flow [2024-06-27 23:10:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:10:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:10:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 23:10:22,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:10:22,437 INFO L175 Difference]: Start difference. First operand has 345 places, 318 transitions, 3510 flow. Second operand 10 states and 124 transitions. [2024-06-27 23:10:22,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 334 transitions, 4248 flow [2024-06-27 23:10:23,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 334 transitions, 4152 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:23,062 INFO L231 Difference]: Finished difference. Result has 347 places, 319 transitions, 3510 flow [2024-06-27 23:10:23,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3510, PETRI_PLACES=347, PETRI_TRANSITIONS=319} [2024-06-27 23:10:23,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-27 23:10:23,063 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 319 transitions, 3510 flow [2024-06-27 23:10:23,063 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 23:10:23,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:23,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:23,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:10:23,063 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 23:10:23,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -374043471, now seen corresponding path program 13 times [2024-06-27 23:10:23,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:23,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189373554] [2024-06-27 23:10:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:23,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:24,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189373554] [2024-06-27 23:10:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189373554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400604552] [2024-06-27 23:10:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:24,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:24,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 319 transitions, 3510 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 23:10:24,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:24,795 INFO L124 PetriNetUnfolderBase]: 616/1175 cut-off events. [2024-06-27 23:10:24,795 INFO L125 PetriNetUnfolderBase]: For 202983/202983 co-relation queries the response was YES. [2024-06-27 23:10:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9537 conditions, 1175 events. 616/1175 cut-off events. For 202983/202983 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6776 event pairs, 33 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 9376. Up to 1016 conditions per place. [2024-06-27 23:10:24,808 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 309 selfloop transitions, 25 changer transitions 0/337 dead transitions. [2024-06-27 23:10:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 337 transitions, 4262 flow [2024-06-27 23:10:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:10:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:10:24,810 INFO L175 Difference]: Start difference. First operand has 347 places, 319 transitions, 3510 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:10:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 337 transitions, 4262 flow [2024-06-27 23:10:25,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 337 transitions, 4163 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:25,460 INFO L231 Difference]: Finished difference. Result has 348 places, 320 transitions, 3505 flow [2024-06-27 23:10:25,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3505, PETRI_PLACES=348, PETRI_TRANSITIONS=320} [2024-06-27 23:10:25,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-27 23:10:25,461 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 320 transitions, 3505 flow [2024-06-27 23:10:25,461 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 23:10:25,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:25,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:10:25,462 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 23:10:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -255895341, now seen corresponding path program 14 times [2024-06-27 23:10:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720307] [2024-06-27 23:10:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:25,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:26,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:26,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720307] [2024-06-27 23:10:26,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:26,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:26,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975112842] [2024-06-27 23:10:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:26,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:26,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 320 transitions, 3505 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 23:10:26,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:26,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:26,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:27,363 INFO L124 PetriNetUnfolderBase]: 620/1183 cut-off events. [2024-06-27 23:10:27,363 INFO L125 PetriNetUnfolderBase]: For 206606/206606 co-relation queries the response was YES. [2024-06-27 23:10:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 1183 events. 620/1183 cut-off events. For 206606/206606 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6848 event pairs, 35 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 9427. Up to 1027 conditions per place. [2024-06-27 23:10:27,377 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 303 selfloop transitions, 29 changer transitions 0/335 dead transitions. [2024-06-27 23:10:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 335 transitions, 4245 flow [2024-06-27 23:10:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:10:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-27 23:10:27,378 INFO L175 Difference]: Start difference. First operand has 348 places, 320 transitions, 3505 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:10:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 335 transitions, 4245 flow [2024-06-27 23:10:28,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 335 transitions, 4155 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:28,069 INFO L231 Difference]: Finished difference. Result has 349 places, 321 transitions, 3519 flow [2024-06-27 23:10:28,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3519, PETRI_PLACES=349, PETRI_TRANSITIONS=321} [2024-06-27 23:10:28,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-27 23:10:28,069 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 321 transitions, 3519 flow [2024-06-27 23:10:28,069 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 23:10:28,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:28,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:28,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:10:28,070 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 23:10:28,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash -90256207, now seen corresponding path program 15 times [2024-06-27 23:10:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:28,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611499951] [2024-06-27 23:10:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:28,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:29,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:29,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611499951] [2024-06-27 23:10:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611499951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:10:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919525297] [2024-06-27 23:10:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:10:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:10:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:10:29,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:29,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 321 transitions, 3519 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 23:10:29,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:29,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:29,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:30,094 INFO L124 PetriNetUnfolderBase]: 617/1178 cut-off events. [2024-06-27 23:10:30,094 INFO L125 PetriNetUnfolderBase]: For 194784/194784 co-relation queries the response was YES. [2024-06-27 23:10:30,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1178 events. 617/1178 cut-off events. For 194784/194784 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6840 event pairs, 38 based on Foata normal form. 2/1179 useless extension candidates. Maximal degree in co-relation 9095. Up to 1001 conditions per place. [2024-06-27 23:10:30,108 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 291 selfloop transitions, 40 changer transitions 0/334 dead transitions. [2024-06-27 23:10:30,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 334 transitions, 4213 flow [2024-06-27 23:10:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:10:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:10:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:10:30,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:10:30,109 INFO L175 Difference]: Start difference. First operand has 349 places, 321 transitions, 3519 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:10:30,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 334 transitions, 4213 flow [2024-06-27 23:10:30,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 334 transitions, 4119 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:10:30,688 INFO L231 Difference]: Finished difference. Result has 351 places, 321 transitions, 3509 flow [2024-06-27 23:10:30,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3509, PETRI_PLACES=351, PETRI_TRANSITIONS=321} [2024-06-27 23:10:30,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-27 23:10:30,689 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 321 transitions, 3509 flow [2024-06-27 23:10:30,689 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 23:10:30,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:30,689 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 23:10:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:10:30,690 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 23:10:30,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash 86278894, now seen corresponding path program 1 times [2024-06-27 23:10:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121207380] [2024-06-27 23:10:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:32,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121207380] [2024-06-27 23:10:32,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121207380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:32,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:32,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:10:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308068770] [2024-06-27 23:10:32,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:10:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:10:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:10:32,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:32,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 321 transitions, 3509 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 23:10:32,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:32,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:32,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:33,343 INFO L124 PetriNetUnfolderBase]: 621/1187 cut-off events. [2024-06-27 23:10:33,344 INFO L125 PetriNetUnfolderBase]: For 194926/194926 co-relation queries the response was YES. [2024-06-27 23:10:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9263 conditions, 1187 events. 621/1187 cut-off events. For 194926/194926 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6925 event pairs, 47 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 9103. Up to 1033 conditions per place. [2024-06-27 23:10:33,358 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 29 changer transitions 0/336 dead transitions. [2024-06-27 23:10:33,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 336 transitions, 4228 flow [2024-06-27 23:10:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:10:33,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 23:10:33,359 INFO L175 Difference]: Start difference. First operand has 351 places, 321 transitions, 3509 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:10:33,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 336 transitions, 4228 flow [2024-06-27 23:10:33,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 336 transitions, 4060 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:33,907 INFO L231 Difference]: Finished difference. Result has 355 places, 323 transitions, 3429 flow [2024-06-27 23:10:33,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3429, PETRI_PLACES=355, PETRI_TRANSITIONS=323} [2024-06-27 23:10:33,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-27 23:10:33,907 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 323 transitions, 3429 flow [2024-06-27 23:10:33,907 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 23:10:33,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:33,908 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 23:10:33,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:10:33,908 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 23:10:33,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash 86275174, now seen corresponding path program 2 times [2024-06-27 23:10:33,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:33,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100340261] [2024-06-27 23:10:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100340261] [2024-06-27 23:10:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100340261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:35,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:35,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:35,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895638903] [2024-06-27 23:10:35,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:35,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:35,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 323 transitions, 3429 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 23:10:35,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:35,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:35,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:36,581 INFO L124 PetriNetUnfolderBase]: 625/1195 cut-off events. [2024-06-27 23:10:36,581 INFO L125 PetriNetUnfolderBase]: For 196889/196889 co-relation queries the response was YES. [2024-06-27 23:10:36,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9201 conditions, 1195 events. 625/1195 cut-off events. For 196889/196889 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6975 event pairs, 47 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 9038. Up to 1036 conditions per place. [2024-06-27 23:10:36,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 28 changer transitions 0/338 dead transitions. [2024-06-27 23:10:36,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 338 transitions, 4147 flow [2024-06-27 23:10:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:10:36,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 23:10:36,597 INFO L175 Difference]: Start difference. First operand has 355 places, 323 transitions, 3429 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:10:36,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 338 transitions, 4147 flow [2024-06-27 23:10:37,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 338 transitions, 4086 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:10:37,220 INFO L231 Difference]: Finished difference. Result has 358 places, 324 transitions, 3442 flow [2024-06-27 23:10:37,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3442, PETRI_PLACES=358, PETRI_TRANSITIONS=324} [2024-06-27 23:10:37,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-27 23:10:37,221 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 324 transitions, 3442 flow [2024-06-27 23:10:37,221 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 23:10:37,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:37,221 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 23:10:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:10:37,221 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 23:10:37,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash 84401224, now seen corresponding path program 3 times [2024-06-27 23:10:37,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:37,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931093185] [2024-06-27 23:10:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:38,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931093185] [2024-06-27 23:10:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931093185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:38,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:38,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:38,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162597891] [2024-06-27 23:10:38,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:38,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:38,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:38,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 324 transitions, 3442 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 23:10:38,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:38,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:38,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:39,434 INFO L124 PetriNetUnfolderBase]: 629/1203 cut-off events. [2024-06-27 23:10:39,434 INFO L125 PetriNetUnfolderBase]: For 199595/199595 co-relation queries the response was YES. [2024-06-27 23:10:39,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9264 conditions, 1203 events. 629/1203 cut-off events. For 199595/199595 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7037 event pairs, 47 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 9100. Up to 1035 conditions per place. [2024-06-27 23:10:39,449 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 311 selfloop transitions, 27 changer transitions 0/341 dead transitions. [2024-06-27 23:10:39,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 341 transitions, 4174 flow [2024-06-27 23:10:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:10:39,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:10:39,453 INFO L175 Difference]: Start difference. First operand has 358 places, 324 transitions, 3442 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:10:39,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 341 transitions, 4174 flow [2024-06-27 23:10:40,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 341 transitions, 4110 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:40,128 INFO L231 Difference]: Finished difference. Result has 360 places, 325 transitions, 3452 flow [2024-06-27 23:10:40,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3452, PETRI_PLACES=360, PETRI_TRANSITIONS=325} [2024-06-27 23:10:40,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-27 23:10:40,130 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 325 transitions, 3452 flow [2024-06-27 23:10:40,130 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 23:10:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:40,130 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 23:10:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:10:40,132 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 23:10:40,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -542463792, now seen corresponding path program 4 times [2024-06-27 23:10:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:40,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822956656] [2024-06-27 23:10:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:42,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:42,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822956656] [2024-06-27 23:10:42,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822956656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:42,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709670782] [2024-06-27 23:10:42,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:42,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:42,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:42,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:42,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:42,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 325 transitions, 3452 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 23:10:42,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:42,750 INFO L124 PetriNetUnfolderBase]: 633/1211 cut-off events. [2024-06-27 23:10:42,750 INFO L125 PetriNetUnfolderBase]: For 203739/203739 co-relation queries the response was YES. [2024-06-27 23:10:42,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9327 conditions, 1211 events. 633/1211 cut-off events. For 203739/203739 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7110 event pairs, 51 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 9162. Up to 1042 conditions per place. [2024-06-27 23:10:42,764 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 298 selfloop transitions, 37 changer transitions 0/338 dead transitions. [2024-06-27 23:10:42,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 338 transitions, 4168 flow [2024-06-27 23:10:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:10:42,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:10:42,766 INFO L175 Difference]: Start difference. First operand has 360 places, 325 transitions, 3452 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:10:42,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 338 transitions, 4168 flow [2024-06-27 23:10:43,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 338 transitions, 4104 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:43,403 INFO L231 Difference]: Finished difference. Result has 362 places, 326 transitions, 3484 flow [2024-06-27 23:10:43,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3484, PETRI_PLACES=362, PETRI_TRANSITIONS=326} [2024-06-27 23:10:43,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-27 23:10:43,403 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 326 transitions, 3484 flow [2024-06-27 23:10:43,404 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 23:10:43,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:43,404 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 23:10:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:10:43,404 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 23:10:43,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1621474346, now seen corresponding path program 5 times [2024-06-27 23:10:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14351987] [2024-06-27 23:10:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:45,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14351987] [2024-06-27 23:10:45,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14351987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:45,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:45,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:45,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221659786] [2024-06-27 23:10:45,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:45,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:45,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:45,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 326 transitions, 3484 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 23:10:45,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:45,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:45,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:45,898 INFO L124 PetriNetUnfolderBase]: 637/1219 cut-off events. [2024-06-27 23:10:45,898 INFO L125 PetriNetUnfolderBase]: For 206959/206959 co-relation queries the response was YES. [2024-06-27 23:10:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9405 conditions, 1219 events. 637/1219 cut-off events. For 206959/206959 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7171 event pairs, 53 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 9239. Up to 1059 conditions per place. [2024-06-27 23:10:45,910 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 32 changer transitions 0/339 dead transitions. [2024-06-27 23:10:45,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 339 transitions, 4204 flow [2024-06-27 23:10:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:10:45,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:10:45,911 INFO L175 Difference]: Start difference. First operand has 362 places, 326 transitions, 3484 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:10:45,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 339 transitions, 4204 flow [2024-06-27 23:10:46,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 339 transitions, 4118 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:46,545 INFO L231 Difference]: Finished difference. Result has 364 places, 327 transitions, 3486 flow [2024-06-27 23:10:46,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3486, PETRI_PLACES=364, PETRI_TRANSITIONS=327} [2024-06-27 23:10:46,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-27 23:10:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 327 transitions, 3486 flow [2024-06-27 23:10:46,546 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 23:10:46,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:46,546 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 23:10:46,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:10:46,546 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 23:10:46,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash -547974042, now seen corresponding path program 6 times [2024-06-27 23:10:46,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767114715] [2024-06-27 23:10:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:46,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:48,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767114715] [2024-06-27 23:10:48,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767114715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:48,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:48,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:48,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168629322] [2024-06-27 23:10:48,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:48,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:48,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:48,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:48,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:10:48,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 327 transitions, 3486 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 23:10:48,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:48,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:10:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:48,804 INFO L124 PetriNetUnfolderBase]: 641/1227 cut-off events. [2024-06-27 23:10:48,805 INFO L125 PetriNetUnfolderBase]: For 210296/210296 co-relation queries the response was YES. [2024-06-27 23:10:48,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1227 events. 641/1227 cut-off events. For 210296/210296 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7228 event pairs, 51 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 9289. Up to 1062 conditions per place. [2024-06-27 23:10:48,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 31 changer transitions 0/341 dead transitions. [2024-06-27 23:10:48,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 341 transitions, 4214 flow [2024-06-27 23:10:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:10:48,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 23:10:48,820 INFO L175 Difference]: Start difference. First operand has 364 places, 327 transitions, 3486 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:10:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 341 transitions, 4214 flow [2024-06-27 23:10:49,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 341 transitions, 4136 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:49,509 INFO L231 Difference]: Finished difference. Result has 366 places, 328 transitions, 3496 flow [2024-06-27 23:10:49,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3496, PETRI_PLACES=366, PETRI_TRANSITIONS=328} [2024-06-27 23:10:49,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-27 23:10:49,510 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 328 transitions, 3496 flow [2024-06-27 23:10:49,510 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 23:10:49,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:49,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:10:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:10:49,510 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 23:10:49,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1627044488, now seen corresponding path program 1 times [2024-06-27 23:10:49,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:49,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100440309] [2024-06-27 23:10:49,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:49,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:51,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100440309] [2024-06-27 23:10:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100440309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:51,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:51,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:10:51,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961830815] [2024-06-27 23:10:51,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:51,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:10:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:51,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:10:51,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:10:52,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:10:52,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 328 transitions, 3496 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 23:10:52,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:52,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:10:52,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:52,767 INFO L124 PetriNetUnfolderBase]: 644/1231 cut-off events. [2024-06-27 23:10:52,767 INFO L125 PetriNetUnfolderBase]: For 205489/205489 co-relation queries the response was YES. [2024-06-27 23:10:52,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9498 conditions, 1231 events. 644/1231 cut-off events. For 205489/205489 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7247 event pairs, 55 based on Foata normal form. 1/1231 useless extension candidates. Maximal degree in co-relation 9330. Up to 973 conditions per place. [2024-06-27 23:10:52,781 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 73 changer transitions 0/345 dead transitions. [2024-06-27 23:10:52,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 345 transitions, 4506 flow [2024-06-27 23:10:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:52,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:10:52,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:10:52,783 INFO L175 Difference]: Start difference. First operand has 366 places, 328 transitions, 3496 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:10:52,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 345 transitions, 4506 flow [2024-06-27 23:10:53,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 345 transitions, 4428 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:53,524 INFO L231 Difference]: Finished difference. Result has 368 places, 330 transitions, 3603 flow [2024-06-27 23:10:53,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3603, PETRI_PLACES=368, PETRI_TRANSITIONS=330} [2024-06-27 23:10:53,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-27 23:10:53,525 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 330 transitions, 3603 flow [2024-06-27 23:10:53,525 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 23:10:53,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:53,525 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 23:10:53,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:10:53,526 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 23:10:53,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash -547820220, now seen corresponding path program 2 times [2024-06-27 23:10:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:53,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011929576] [2024-06-27 23:10:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:10:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:10:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:10:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011929576] [2024-06-27 23:10:56,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011929576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:10:56,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:10:56,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:10:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284423384] [2024-06-27 23:10:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:10:56,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:10:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:10:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:10:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:10:56,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:10:56,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 330 transitions, 3603 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 23:10:56,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:10:56,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:10:56,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:10:57,052 INFO L124 PetriNetUnfolderBase]: 647/1236 cut-off events. [2024-06-27 23:10:57,052 INFO L125 PetriNetUnfolderBase]: For 208829/208829 co-relation queries the response was YES. [2024-06-27 23:10:57,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9630 conditions, 1236 events. 647/1236 cut-off events. For 208829/208829 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7299 event pairs, 56 based on Foata normal form. 1/1236 useless extension candidates. Maximal degree in co-relation 9461. Up to 1046 conditions per place. [2024-06-27 23:10:57,068 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 52 changer transitions 0/346 dead transitions. [2024-06-27 23:10:57,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 346 transitions, 4361 flow [2024-06-27 23:10:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:10:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:10:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:10:57,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:10:57,069 INFO L175 Difference]: Start difference. First operand has 368 places, 330 transitions, 3603 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:10:57,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 346 transitions, 4361 flow [2024-06-27 23:10:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 346 transitions, 4187 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:10:57,817 INFO L231 Difference]: Finished difference. Result has 370 places, 332 transitions, 3580 flow [2024-06-27 23:10:57,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3580, PETRI_PLACES=370, PETRI_TRANSITIONS=332} [2024-06-27 23:10:57,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-27 23:10:57,818 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 332 transitions, 3580 flow [2024-06-27 23:10:57,818 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 23:10:57,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:10:57,819 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 23:10:57,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:10:57,819 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 23:10:57,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:10:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -542248311, now seen corresponding path program 1 times [2024-06-27 23:10:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:10:57,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993221777] [2024-06-27 23:10:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:10:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:10:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:00,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:00,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993221777] [2024-06-27 23:11:00,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993221777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:00,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:00,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954794862] [2024-06-27 23:11:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:00,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:00,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 332 transitions, 3580 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 23:11:00,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:00,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:00,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:00,723 INFO L124 PetriNetUnfolderBase]: 663/1270 cut-off events. [2024-06-27 23:11:00,724 INFO L125 PetriNetUnfolderBase]: For 286330/286330 co-relation queries the response was YES. [2024-06-27 23:11:00,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9757 conditions, 1270 events. 663/1270 cut-off events. For 286330/286330 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7539 event pairs, 61 based on Foata normal form. 10/1279 useless extension candidates. Maximal degree in co-relation 9587. Up to 1032 conditions per place. [2024-06-27 23:11:00,740 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 292 selfloop transitions, 52 changer transitions 4/351 dead transitions. [2024-06-27 23:11:00,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 351 transitions, 4370 flow [2024-06-27 23:11:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:11:00,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-27 23:11:00,741 INFO L175 Difference]: Start difference. First operand has 370 places, 332 transitions, 3580 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:11:00,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 351 transitions, 4370 flow [2024-06-27 23:11:01,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 351 transitions, 4245 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:01,499 INFO L231 Difference]: Finished difference. Result has 372 places, 332 transitions, 3575 flow [2024-06-27 23:11:01,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3575, PETRI_PLACES=372, PETRI_TRANSITIONS=332} [2024-06-27 23:11:01,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-27 23:11:01,500 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 332 transitions, 3575 flow [2024-06-27 23:11:01,500 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 23:11:01,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:01,500 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 23:11:01,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:11:01,500 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 23:11:01,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash -542457840, now seen corresponding path program 3 times [2024-06-27 23:11:01,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:01,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275654022] [2024-06-27 23:11:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:01,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:03,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275654022] [2024-06-27 23:11:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275654022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:03,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:03,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874518416] [2024-06-27 23:11:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:03,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:03,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:03,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:04,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:04,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 332 transitions, 3575 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 23:11:04,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:04,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:04,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:05,065 INFO L124 PetriNetUnfolderBase]: 655/1259 cut-off events. [2024-06-27 23:11:05,066 INFO L125 PetriNetUnfolderBase]: For 206797/206797 co-relation queries the response was YES. [2024-06-27 23:11:05,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9581 conditions, 1259 events. 655/1259 cut-off events. For 206797/206797 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7484 event pairs, 59 based on Foata normal form. 1/1259 useless extension candidates. Maximal degree in co-relation 9410. Up to 1001 conditions per place. [2024-06-27 23:11:05,080 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 272 selfloop transitions, 71 changer transitions 0/346 dead transitions. [2024-06-27 23:11:05,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 346 transitions, 4295 flow [2024-06-27 23:11:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:11:05,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:11:05,081 INFO L175 Difference]: Start difference. First operand has 372 places, 332 transitions, 3575 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:11:05,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 346 transitions, 4295 flow [2024-06-27 23:11:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 346 transitions, 4165 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:05,820 INFO L231 Difference]: Finished difference. Result has 374 places, 332 transitions, 3592 flow [2024-06-27 23:11:05,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3592, PETRI_PLACES=374, PETRI_TRANSITIONS=332} [2024-06-27 23:11:05,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-27 23:11:05,820 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 332 transitions, 3592 flow [2024-06-27 23:11:05,820 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 23:11:05,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:05,821 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 23:11:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:11:05,821 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 23:11:05,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1634345302, now seen corresponding path program 7 times [2024-06-27 23:11:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135754105] [2024-06-27 23:11:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:08,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:08,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135754105] [2024-06-27 23:11:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135754105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:11:08,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309081399] [2024-06-27 23:11:08,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:08,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:11:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:11:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:11:08,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:11:08,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 332 transitions, 3592 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 23:11:08,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:08,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:11:08,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:09,128 INFO L124 PetriNetUnfolderBase]: 659/1268 cut-off events. [2024-06-27 23:11:09,128 INFO L125 PetriNetUnfolderBase]: For 218823/218823 co-relation queries the response was YES. [2024-06-27 23:11:09,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1268 events. 659/1268 cut-off events. For 218823/218823 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7568 event pairs, 55 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9488. Up to 1072 conditions per place. [2024-06-27 23:11:09,145 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 50 changer transitions 0/344 dead transitions. [2024-06-27 23:11:09,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 344 transitions, 4322 flow [2024-06-27 23:11:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:11:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:11:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:11:09,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:11:09,146 INFO L175 Difference]: Start difference. First operand has 374 places, 332 transitions, 3592 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:11:09,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 344 transitions, 4322 flow [2024-06-27 23:11:09,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 344 transitions, 4119 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:11:09,969 INFO L231 Difference]: Finished difference. Result has 373 places, 333 transitions, 3517 flow [2024-06-27 23:11:09,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3517, PETRI_PLACES=373, PETRI_TRANSITIONS=333} [2024-06-27 23:11:09,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-27 23:11:09,969 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 333 transitions, 3517 flow [2024-06-27 23:11:09,970 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 23:11:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:09,970 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 23:11:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:11:09,970 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 23:11:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1828284712, now seen corresponding path program 8 times [2024-06-27 23:11:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:09,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193158623] [2024-06-27 23:11:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:09,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:12,385 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 23:11:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193158623] [2024-06-27 23:11:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193158623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:12,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:12,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902890118] [2024-06-27 23:11:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:11:12,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 333 transitions, 3517 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 23:11:12,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:12,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:11:12,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:13,082 INFO L124 PetriNetUnfolderBase]: 663/1276 cut-off events. [2024-06-27 23:11:13,082 INFO L125 PetriNetUnfolderBase]: For 222187/222187 co-relation queries the response was YES. [2024-06-27 23:11:13,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9648 conditions, 1276 events. 663/1276 cut-off events. For 222187/222187 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7611 event pairs, 57 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9475. Up to 1101 conditions per place. [2024-06-27 23:11:13,098 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 303 selfloop transitions, 39 changer transitions 0/345 dead transitions. [2024-06-27 23:11:13,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 345 transitions, 4251 flow [2024-06-27 23:11:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:11:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:11:13,099 INFO L175 Difference]: Start difference. First operand has 373 places, 333 transitions, 3517 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:11:13,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 345 transitions, 4251 flow [2024-06-27 23:11:13,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 345 transitions, 4089 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:13,919 INFO L231 Difference]: Finished difference. Result has 375 places, 334 transitions, 3463 flow [2024-06-27 23:11:13,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3463, PETRI_PLACES=375, PETRI_TRANSITIONS=334} [2024-06-27 23:11:13,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-27 23:11:13,920 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 334 transitions, 3463 flow [2024-06-27 23:11:13,921 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 23:11:13,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:13,921 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 23:11:13,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:11:13,921 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 23:11:13,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1833647092, now seen corresponding path program 9 times [2024-06-27 23:11:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:13,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138614133] [2024-06-27 23:11:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138614133] [2024-06-27 23:11:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138614133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281468051] [2024-06-27 23:11:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:16,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:11:16,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 334 transitions, 3463 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 23:11:16,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:16,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:11:16,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:17,203 INFO L124 PetriNetUnfolderBase]: 667/1284 cut-off events. [2024-06-27 23:11:17,203 INFO L125 PetriNetUnfolderBase]: For 225331/225331 co-relation queries the response was YES. [2024-06-27 23:11:17,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 1284 events. 667/1284 cut-off events. For 225331/225331 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7698 event pairs, 59 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 9455. Up to 1115 conditions per place. [2024-06-27 23:11:17,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 36 changer transitions 0/346 dead transitions. [2024-06-27 23:11:17,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 346 transitions, 4201 flow [2024-06-27 23:11:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:11:17,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:11:17,220 INFO L175 Difference]: Start difference. First operand has 375 places, 334 transitions, 3463 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:11:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 346 transitions, 4201 flow [2024-06-27 23:11:17,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 346 transitions, 4103 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:17,993 INFO L231 Difference]: Finished difference. Result has 377 places, 335 transitions, 3469 flow [2024-06-27 23:11:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3469, PETRI_PLACES=377, PETRI_TRANSITIONS=335} [2024-06-27 23:11:17,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-27 23:11:17,994 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 335 transitions, 3469 flow [2024-06-27 23:11:17,994 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 23:11:17,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:17,994 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 23:11:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:11:17,994 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:17,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1833794962, now seen corresponding path program 10 times [2024-06-27 23:11:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:17,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402016385] [2024-06-27 23:11:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:17,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:19,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:19,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402016385] [2024-06-27 23:11:19,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402016385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:19,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:19,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:19,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710832743] [2024-06-27 23:11:19,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:19,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:19,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:20,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:11:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 335 transitions, 3469 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 23:11:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:11:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:20,600 INFO L124 PetriNetUnfolderBase]: 671/1292 cut-off events. [2024-06-27 23:11:20,601 INFO L125 PetriNetUnfolderBase]: For 228792/228792 co-relation queries the response was YES. [2024-06-27 23:11:20,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9682 conditions, 1292 events. 671/1292 cut-off events. For 228792/228792 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7780 event pairs, 57 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 9508. Up to 1118 conditions per place. [2024-06-27 23:11:20,616 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 310 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2024-06-27 23:11:20,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 348 transitions, 4215 flow [2024-06-27 23:11:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:11:20,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:11:20,618 INFO L175 Difference]: Start difference. First operand has 377 places, 335 transitions, 3469 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:11:20,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 348 transitions, 4215 flow [2024-06-27 23:11:21,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 348 transitions, 4121 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:21,401 INFO L231 Difference]: Finished difference. Result has 379 places, 336 transitions, 3479 flow [2024-06-27 23:11:21,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3479, PETRI_PLACES=379, PETRI_TRANSITIONS=336} [2024-06-27 23:11:21,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-27 23:11:21,402 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 336 transitions, 3479 flow [2024-06-27 23:11:21,402 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 23:11:21,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:21,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:11:21,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:11:21,403 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:21,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash 297388018, now seen corresponding path program 4 times [2024-06-27 23:11:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536519848] [2024-06-27 23:11:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:21,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536519848] [2024-06-27 23:11:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536519848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985895317] [2024-06-27 23:11:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:25,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:25,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:25,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:25,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 336 transitions, 3479 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 23:11:25,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:25,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:25,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:27,261 INFO L124 PetriNetUnfolderBase]: 674/1297 cut-off events. [2024-06-27 23:11:27,261 INFO L125 PetriNetUnfolderBase]: For 222815/222815 co-relation queries the response was YES. [2024-06-27 23:11:27,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9712 conditions, 1297 events. 674/1297 cut-off events. For 222815/222815 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7777 event pairs, 56 based on Foata normal form. 1/1297 useless extension candidates. Maximal degree in co-relation 9537. Up to 1055 conditions per place. [2024-06-27 23:11:27,277 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 278 selfloop transitions, 70 changer transitions 0/351 dead transitions. [2024-06-27 23:11:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 351 transitions, 4515 flow [2024-06-27 23:11:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:11:27,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-27 23:11:27,278 INFO L175 Difference]: Start difference. First operand has 379 places, 336 transitions, 3479 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:11:27,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 351 transitions, 4515 flow [2024-06-27 23:11:28,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 351 transitions, 4421 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:28,062 INFO L231 Difference]: Finished difference. Result has 381 places, 338 transitions, 3568 flow [2024-06-27 23:11:28,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3568, PETRI_PLACES=381, PETRI_TRANSITIONS=338} [2024-06-27 23:11:28,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-27 23:11:28,063 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 338 transitions, 3568 flow [2024-06-27 23:11:28,063 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 23:11:28,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:28,063 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 23:11:28,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:11:28,063 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:28,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 297597547, now seen corresponding path program 2 times [2024-06-27 23:11:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006401500] [2024-06-27 23:11:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006401500] [2024-06-27 23:11:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006401500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:30,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:30,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877694894] [2024-06-27 23:11:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:30,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:30,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:31,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:31,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 338 transitions, 3568 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 23:11:31,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:31,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:31,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:31,566 INFO L124 PetriNetUnfolderBase]: 678/1305 cut-off events. [2024-06-27 23:11:31,567 INFO L125 PetriNetUnfolderBase]: For 235492/235492 co-relation queries the response was YES. [2024-06-27 23:11:31,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9820 conditions, 1305 events. 678/1305 cut-off events. For 235492/235492 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7852 event pairs, 56 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 9644. Up to 1110 conditions per place. [2024-06-27 23:11:31,583 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 49 changer transitions 0/352 dead transitions. [2024-06-27 23:11:31,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 352 transitions, 4318 flow [2024-06-27 23:11:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:11:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:11:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:11:31,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-27 23:11:31,585 INFO L175 Difference]: Start difference. First operand has 381 places, 338 transitions, 3568 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:11:31,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 352 transitions, 4318 flow [2024-06-27 23:11:32,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 352 transitions, 4150 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:32,411 INFO L231 Difference]: Finished difference. Result has 382 places, 339 transitions, 3526 flow [2024-06-27 23:11:32,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3526, PETRI_PLACES=382, PETRI_TRANSITIONS=339} [2024-06-27 23:11:32,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-27 23:11:32,412 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 339 transitions, 3526 flow [2024-06-27 23:11:32,412 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 23:11:32,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:32,412 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 23:11:32,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:11:32,413 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:32,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:32,414 INFO L85 PathProgramCache]: Analyzing trace with hash 491327428, now seen corresponding path program 5 times [2024-06-27 23:11:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:32,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553103703] [2024-06-27 23:11:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:35,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:35,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553103703] [2024-06-27 23:11:35,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553103703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:35,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:35,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180273599] [2024-06-27 23:11:35,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:35,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:36,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:36,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 339 transitions, 3526 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 23:11:36,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:36,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:36,856 INFO L124 PetriNetUnfolderBase]: 681/1310 cut-off events. [2024-06-27 23:11:36,856 INFO L125 PetriNetUnfolderBase]: For 229239/229239 co-relation queries the response was YES. [2024-06-27 23:11:36,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 1310 events. 681/1310 cut-off events. For 229239/229239 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7915 event pairs, 56 based on Foata normal form. 1/1310 useless extension candidates. Maximal degree in co-relation 9651. Up to 908 conditions per place. [2024-06-27 23:11:36,873 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 116 changer transitions 0/355 dead transitions. [2024-06-27 23:11:36,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 355 transitions, 4850 flow [2024-06-27 23:11:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:11:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:11:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 23:11:36,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-27 23:11:36,875 INFO L175 Difference]: Start difference. First operand has 382 places, 339 transitions, 3526 flow. Second operand 10 states and 145 transitions. [2024-06-27 23:11:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 355 transitions, 4850 flow [2024-06-27 23:11:37,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 355 transitions, 4722 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:11:37,681 INFO L231 Difference]: Finished difference. Result has 384 places, 341 transitions, 3671 flow [2024-06-27 23:11:37,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3671, PETRI_PLACES=384, PETRI_TRANSITIONS=341} [2024-06-27 23:11:37,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-27 23:11:37,682 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 341 transitions, 3671 flow [2024-06-27 23:11:37,682 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 23:11:37,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:37,682 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 23:11:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:11:37,682 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:37,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash 491536957, now seen corresponding path program 3 times [2024-06-27 23:11:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:37,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009680743] [2024-06-27 23:11:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:40,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:40,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009680743] [2024-06-27 23:11:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009680743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:40,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:40,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:40,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929732954] [2024-06-27 23:11:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:40,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:40,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:40,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 341 transitions, 3671 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 23:11:40,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:40,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:40,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:41,013 INFO L124 PetriNetUnfolderBase]: 685/1318 cut-off events. [2024-06-27 23:11:41,014 INFO L125 PetriNetUnfolderBase]: For 242575/242575 co-relation queries the response was YES. [2024-06-27 23:11:41,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10007 conditions, 1318 events. 685/1318 cut-off events. For 242575/242575 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7975 event pairs, 56 based on Foata normal form. 2/1319 useless extension candidates. Maximal degree in co-relation 9830. Up to 1064 conditions per place. [2024-06-27 23:11:41,032 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 67 changer transitions 0/355 dead transitions. [2024-06-27 23:11:41,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 355 transitions, 4429 flow [2024-06-27 23:11:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:11:41,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 23:11:41,033 INFO L175 Difference]: Start difference. First operand has 384 places, 341 transitions, 3671 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:11:41,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 355 transitions, 4429 flow [2024-06-27 23:11:41,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 355 transitions, 4192 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:11:41,863 INFO L231 Difference]: Finished difference. Result has 388 places, 342 transitions, 3598 flow [2024-06-27 23:11:41,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3434, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3598, PETRI_PLACES=388, PETRI_TRANSITIONS=342} [2024-06-27 23:11:41,864 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-27 23:11:41,864 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 342 transitions, 3598 flow [2024-06-27 23:11:41,864 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 23:11:41,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:41,864 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 23:11:41,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:11:41,865 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:41,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash 491529238, now seen corresponding path program 6 times [2024-06-27 23:11:41,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:41,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758032379] [2024-06-27 23:11:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758032379] [2024-06-27 23:11:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758032379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:45,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:45,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044537550] [2024-06-27 23:11:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:45,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:45,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 342 transitions, 3598 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 23:11:45,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:45,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:45,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:46,318 INFO L124 PetriNetUnfolderBase]: 683/1315 cut-off events. [2024-06-27 23:11:46,319 INFO L125 PetriNetUnfolderBase]: For 226143/226143 co-relation queries the response was YES. [2024-06-27 23:11:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9762 conditions, 1315 events. 683/1315 cut-off events. For 226143/226143 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7963 event pairs, 56 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 9583. Up to 914 conditions per place. [2024-06-27 23:11:46,334 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 112 changer transitions 0/356 dead transitions. [2024-06-27 23:11:46,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 356 transitions, 4896 flow [2024-06-27 23:11:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:46,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:11:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:11:46,335 INFO L175 Difference]: Start difference. First operand has 388 places, 342 transitions, 3598 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:11:46,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 356 transitions, 4896 flow [2024-06-27 23:11:47,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 356 transitions, 4720 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:11:47,132 INFO L231 Difference]: Finished difference. Result has 390 places, 342 transitions, 3651 flow [2024-06-27 23:11:47,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3651, PETRI_PLACES=390, PETRI_TRANSITIONS=342} [2024-06-27 23:11:47,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-27 23:11:47,134 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 342 transitions, 3651 flow [2024-06-27 23:11:47,134 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 23:11:47,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:47,135 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 23:11:47,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:11:47,135 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:47,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:47,135 INFO L85 PathProgramCache]: Analyzing trace with hash 297589828, now seen corresponding path program 7 times [2024-06-27 23:11:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:47,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011536692] [2024-06-27 23:11:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:50,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:50,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011536692] [2024-06-27 23:11:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011536692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:11:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26306916] [2024-06-27 23:11:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:50,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:11:50,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:11:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:11:50,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:50,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 342 transitions, 3651 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 23:11:50,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:50,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:50,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:51,367 INFO L124 PetriNetUnfolderBase]: 681/1312 cut-off events. [2024-06-27 23:11:51,367 INFO L125 PetriNetUnfolderBase]: For 219348/219348 co-relation queries the response was YES. [2024-06-27 23:11:51,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9652 conditions, 1312 events. 681/1312 cut-off events. For 219348/219348 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7918 event pairs, 56 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 9472. Up to 1071 conditions per place. [2024-06-27 23:11:51,383 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 71 changer transitions 0/354 dead transitions. [2024-06-27 23:11:51,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 354 transitions, 4381 flow [2024-06-27 23:11:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:11:51,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:11:51,385 INFO L175 Difference]: Start difference. First operand has 390 places, 342 transitions, 3651 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:11:51,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 354 transitions, 4381 flow [2024-06-27 23:11:52,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 354 transitions, 4103 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 23:11:52,198 INFO L231 Difference]: Finished difference. Result has 390 places, 342 transitions, 3520 flow [2024-06-27 23:11:52,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3520, PETRI_PLACES=390, PETRI_TRANSITIONS=342} [2024-06-27 23:11:52,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-27 23:11:52,199 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 342 transitions, 3520 flow [2024-06-27 23:11:52,199 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 23:11:52,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:52,199 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 23:11:52,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:11:52,199 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:52,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash 498679078, now seen corresponding path program 8 times [2024-06-27 23:11:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:52,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603593996] [2024-06-27 23:11:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:52,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:11:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:11:55,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:11:55,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603593996] [2024-06-27 23:11:55,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603593996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:11:55,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:11:55,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:11:55,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206385021] [2024-06-27 23:11:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:11:55,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:11:55,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:11:55,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:11:55,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:11:55,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:11:55,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 342 transitions, 3520 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 23:11:55,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:11:55,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:11:55,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:11:56,628 INFO L124 PetriNetUnfolderBase]: 679/1309 cut-off events. [2024-06-27 23:11:56,628 INFO L125 PetriNetUnfolderBase]: For 212064/212064 co-relation queries the response was YES. [2024-06-27 23:11:56,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 1309 events. 679/1309 cut-off events. For 212064/212064 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7930 event pairs, 56 based on Foata normal form. 1/1309 useless extension candidates. Maximal degree in co-relation 9204. Up to 910 conditions per place. [2024-06-27 23:11:56,644 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 222 selfloop transitions, 129 changer transitions 0/354 dead transitions. [2024-06-27 23:11:56,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 354 transitions, 4250 flow [2024-06-27 23:11:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:11:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:11:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:11:56,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-27 23:11:56,646 INFO L175 Difference]: Start difference. First operand has 390 places, 342 transitions, 3520 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:11:56,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 354 transitions, 4250 flow [2024-06-27 23:11:57,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 354 transitions, 4044 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 23:11:57,393 INFO L231 Difference]: Finished difference. Result has 390 places, 342 transitions, 3577 flow [2024-06-27 23:11:57,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3577, PETRI_PLACES=390, PETRI_TRANSITIONS=342} [2024-06-27 23:11:57,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-27 23:11:57,393 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 342 transitions, 3577 flow [2024-06-27 23:11:57,394 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 23:11:57,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:11:57,394 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 23:11:57,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:11:57,394 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:11:57,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:11:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 498686797, now seen corresponding path program 4 times [2024-06-27 23:11:57,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:11:57,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962566643] [2024-06-27 23:11:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:11:57,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:11:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:00,049 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 23:12:00,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962566643] [2024-06-27 23:12:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962566643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:00,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:00,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696301696] [2024-06-27 23:12:00,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:00,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:00,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:00,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:00,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 342 transitions, 3577 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 23:12:00,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:00,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:00,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:00,723 INFO L124 PetriNetUnfolderBase]: 683/1317 cut-off events. [2024-06-27 23:12:00,723 INFO L125 PetriNetUnfolderBase]: For 225410/225410 co-relation queries the response was YES. [2024-06-27 23:12:00,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 1317 events. 683/1317 cut-off events. For 225410/225410 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7993 event pairs, 58 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 9360. Up to 1063 conditions per place. [2024-06-27 23:12:00,739 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 73 changer transitions 0/356 dead transitions. [2024-06-27 23:12:00,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 356 transitions, 4339 flow [2024-06-27 23:12:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:12:00,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 23:12:00,740 INFO L175 Difference]: Start difference. First operand has 390 places, 342 transitions, 3577 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:12:00,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 356 transitions, 4339 flow [2024-06-27 23:12:01,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 356 transitions, 4070 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:12:01,502 INFO L231 Difference]: Finished difference. Result has 391 places, 343 transitions, 3486 flow [2024-06-27 23:12:01,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3486, PETRI_PLACES=391, PETRI_TRANSITIONS=343} [2024-06-27 23:12:01,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-27 23:12:01,503 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 343 transitions, 3486 flow [2024-06-27 23:12:01,503 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 23:12:01,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:01,503 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 23:12:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:12:01,503 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:01,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1626711211, now seen corresponding path program 5 times [2024-06-27 23:12:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:01,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416901992] [2024-06-27 23:12:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416901992] [2024-06-27 23:12:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416901992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468539779] [2024-06-27 23:12:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:05,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:05,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 343 transitions, 3486 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 23:12:05,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:05,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:05,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:06,122 INFO L124 PetriNetUnfolderBase]: 694/1338 cut-off events. [2024-06-27 23:12:06,122 INFO L125 PetriNetUnfolderBase]: For 249821/249821 co-relation queries the response was YES. [2024-06-27 23:12:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 1338 events. 694/1338 cut-off events. For 249821/249821 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8134 event pairs, 57 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 9732. Up to 1003 conditions per place. [2024-06-27 23:12:06,139 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 87 changer transitions 2/362 dead transitions. [2024-06-27 23:12:06,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 362 transitions, 4608 flow [2024-06-27 23:12:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 23:12:06,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-27 23:12:06,141 INFO L175 Difference]: Start difference. First operand has 391 places, 343 transitions, 3486 flow. Second operand 11 states and 151 transitions. [2024-06-27 23:12:06,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 362 transitions, 4608 flow [2024-06-27 23:12:07,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 362 transitions, 4440 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:12:07,024 INFO L231 Difference]: Finished difference. Result has 393 places, 345 transitions, 3554 flow [2024-06-27 23:12:07,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3318, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3554, PETRI_PLACES=393, PETRI_TRANSITIONS=345} [2024-06-27 23:12:07,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-27 23:12:07,024 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 345 transitions, 3554 flow [2024-06-27 23:12:07,025 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 23:12:07,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:07,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:12:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:12:07,025 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:07,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 498946267, now seen corresponding path program 6 times [2024-06-27 23:12:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:07,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854031834] [2024-06-27 23:12:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:09,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:09,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854031834] [2024-06-27 23:12:09,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854031834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:09,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639386306] [2024-06-27 23:12:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:09,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:10,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:10,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 345 transitions, 3554 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 23:12:10,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:10,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:10,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:10,640 INFO L124 PetriNetUnfolderBase]: 691/1333 cut-off events. [2024-06-27 23:12:10,640 INFO L125 PetriNetUnfolderBase]: For 232171/232171 co-relation queries the response was YES. [2024-06-27 23:12:10,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9618 conditions, 1333 events. 691/1333 cut-off events. For 232171/232171 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8124 event pairs, 58 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 9434. Up to 1013 conditions per place. [2024-06-27 23:12:10,658 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 105 changer transitions 0/358 dead transitions. [2024-06-27 23:12:10,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 358 transitions, 4294 flow [2024-06-27 23:12:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:12:10,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:12:10,659 INFO L175 Difference]: Start difference. First operand has 393 places, 345 transitions, 3554 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:12:10,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 358 transitions, 4294 flow [2024-06-27 23:12:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 358 transitions, 4138 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:12:11,407 INFO L231 Difference]: Finished difference. Result has 397 places, 345 transitions, 3612 flow [2024-06-27 23:12:11,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3612, PETRI_PLACES=397, PETRI_TRANSITIONS=345} [2024-06-27 23:12:11,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-27 23:12:11,408 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 345 transitions, 3612 flow [2024-06-27 23:12:11,408 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 23:12:11,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:11,408 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 23:12:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:12:11,408 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:11,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1939267676, now seen corresponding path program 11 times [2024-06-27 23:12:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570316129] [2024-06-27 23:12:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:13,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:13,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570316129] [2024-06-27 23:12:13,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570316129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:13,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:12:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940292885] [2024-06-27 23:12:13,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:13,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:12:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:12:13,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:12:13,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:12:13,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 345 transitions, 3612 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 23:12:13,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:13,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:12:13,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:14,225 INFO L124 PetriNetUnfolderBase]: 695/1341 cut-off events. [2024-06-27 23:12:14,225 INFO L125 PetriNetUnfolderBase]: For 235081/235081 co-relation queries the response was YES. [2024-06-27 23:12:14,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 1341 events. 695/1341 cut-off events. For 235081/235081 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8188 event pairs, 69 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 9594. Up to 1130 conditions per place. [2024-06-27 23:12:14,243 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 296 selfloop transitions, 57 changer transitions 0/356 dead transitions. [2024-06-27 23:12:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 356 transitions, 4370 flow [2024-06-27 23:12:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:12:14,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 23:12:14,244 INFO L175 Difference]: Start difference. First operand has 397 places, 345 transitions, 3612 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:12:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 356 transitions, 4370 flow [2024-06-27 23:12:15,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 356 transitions, 4136 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:12:15,164 INFO L231 Difference]: Finished difference. Result has 398 places, 346 transitions, 3528 flow [2024-06-27 23:12:15,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3528, PETRI_PLACES=398, PETRI_TRANSITIONS=346} [2024-06-27 23:12:15,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 368 predicate places. [2024-06-27 23:12:15,165 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 346 transitions, 3528 flow [2024-06-27 23:12:15,165 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 23:12:15,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:15,165 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 23:12:15,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:12:15,165 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:15,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1939415546, now seen corresponding path program 12 times [2024-06-27 23:12:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:15,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282753603] [2024-06-27 23:12:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282753603] [2024-06-27 23:12:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282753603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:17,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:12:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050145211] [2024-06-27 23:12:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:17,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:12:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:12:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:12:17,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:12:17,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 346 transitions, 3528 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 23:12:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:17,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:12:17,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:17,801 INFO L124 PetriNetUnfolderBase]: 699/1349 cut-off events. [2024-06-27 23:12:17,802 INFO L125 PetriNetUnfolderBase]: For 238620/238620 co-relation queries the response was YES. [2024-06-27 23:12:17,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9738 conditions, 1349 events. 699/1349 cut-off events. For 238620/238620 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8240 event pairs, 67 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 9551. Up to 1133 conditions per place. [2024-06-27 23:12:17,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 299 selfloop transitions, 56 changer transitions 0/358 dead transitions. [2024-06-27 23:12:17,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 358 transitions, 4294 flow [2024-06-27 23:12:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 23:12:17,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 23:12:17,840 INFO L175 Difference]: Start difference. First operand has 398 places, 346 transitions, 3528 flow. Second operand 11 states and 131 transitions. [2024-06-27 23:12:17,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 358 transitions, 4294 flow [2024-06-27 23:12:18,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 358 transitions, 4154 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:12:18,629 INFO L231 Difference]: Finished difference. Result has 400 places, 347 transitions, 3538 flow [2024-06-27 23:12:18,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3538, PETRI_PLACES=400, PETRI_TRANSITIONS=347} [2024-06-27 23:12:18,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-27 23:12:18,630 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 347 transitions, 3538 flow [2024-06-27 23:12:18,630 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 23:12:18,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:18,630 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 23:12:18,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:12:18,630 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:18,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash -56111648, now seen corresponding path program 13 times [2024-06-27 23:12:18,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350881359] [2024-06-27 23:12:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350881359] [2024-06-27 23:12:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350881359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:21,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:21,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:12:21,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300758389] [2024-06-27 23:12:21,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:21,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:12:21,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:21,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:12:21,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:12:21,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:12:21,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 347 transitions, 3538 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 23:12:21,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:21,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:12:21,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:22,028 INFO L124 PetriNetUnfolderBase]: 703/1357 cut-off events. [2024-06-27 23:12:22,028 INFO L125 PetriNetUnfolderBase]: For 242135/242135 co-relation queries the response was YES. [2024-06-27 23:12:22,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9795 conditions, 1357 events. 703/1357 cut-off events. For 242135/242135 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8285 event pairs, 69 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 9607. Up to 1045 conditions per place. [2024-06-27 23:12:22,047 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 249 selfloop transitions, 106 changer transitions 0/358 dead transitions. [2024-06-27 23:12:22,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 358 transitions, 4304 flow [2024-06-27 23:12:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:12:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:12:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:12:22,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:12:22,048 INFO L175 Difference]: Start difference. First operand has 400 places, 347 transitions, 3538 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:12:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 358 transitions, 4304 flow [2024-06-27 23:12:22,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 358 transitions, 4164 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:12:22,939 INFO L231 Difference]: Finished difference. Result has 401 places, 348 transitions, 3650 flow [2024-06-27 23:12:22,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3650, PETRI_PLACES=401, PETRI_TRANSITIONS=348} [2024-06-27 23:12:22,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-27 23:12:22,943 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 348 transitions, 3650 flow [2024-06-27 23:12:22,943 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 23:12:22,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:22,943 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 23:12:22,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:12:22,943 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:22,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1933905296, now seen corresponding path program 14 times [2024-06-27 23:12:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:22,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410894424] [2024-06-27 23:12:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:25,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410894424] [2024-06-27 23:12:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410894424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:25,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:25,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:12:25,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553739150] [2024-06-27 23:12:25,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:25,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:12:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:25,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:12:25,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:12:25,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:12:25,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 348 transitions, 3650 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 23:12:25,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:25,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:12:25,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:26,409 INFO L124 PetriNetUnfolderBase]: 707/1365 cut-off events. [2024-06-27 23:12:26,410 INFO L125 PetriNetUnfolderBase]: For 245727/245727 co-relation queries the response was YES. [2024-06-27 23:12:26,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 1365 events. 707/1365 cut-off events. For 245727/245727 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8374 event pairs, 69 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 9767. Up to 1148 conditions per place. [2024-06-27 23:12:26,427 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 296 selfloop transitions, 60 changer transitions 0/359 dead transitions. [2024-06-27 23:12:26,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 359 transitions, 4420 flow [2024-06-27 23:12:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:12:26,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-27 23:12:26,429 INFO L175 Difference]: Start difference. First operand has 401 places, 348 transitions, 3650 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:12:26,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 359 transitions, 4420 flow [2024-06-27 23:12:27,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 359 transitions, 4178 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:12:27,316 INFO L231 Difference]: Finished difference. Result has 404 places, 349 transitions, 3570 flow [2024-06-27 23:12:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3570, PETRI_PLACES=404, PETRI_TRANSITIONS=349} [2024-06-27 23:12:27,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-27 23:12:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 349 transitions, 3570 flow [2024-06-27 23:12:27,316 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 23:12:27,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:27,317 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 23:12:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:12:27,317 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1739965886, now seen corresponding path program 15 times [2024-06-27 23:12:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472152736] [2024-06-27 23:12:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:29,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:29,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472152736] [2024-06-27 23:12:29,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472152736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:29,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:29,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:12:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056019706] [2024-06-27 23:12:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:12:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:12:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:12:29,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:12:29,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 349 transitions, 3570 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 23:12:29,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:29,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:12:29,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:30,185 INFO L124 PetriNetUnfolderBase]: 711/1373 cut-off events. [2024-06-27 23:12:30,185 INFO L125 PetriNetUnfolderBase]: For 248917/248917 co-relation queries the response was YES. [2024-06-27 23:12:30,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9917 conditions, 1373 events. 711/1373 cut-off events. For 248917/248917 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8416 event pairs, 71 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 9727. Up to 1147 conditions per place. [2024-06-27 23:12:30,204 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 64 changer transitions 0/360 dead transitions. [2024-06-27 23:12:30,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 360 transitions, 4344 flow [2024-06-27 23:12:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:12:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:12:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:12:30,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:12:30,206 INFO L175 Difference]: Start difference. First operand has 404 places, 349 transitions, 3570 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:12:30,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 360 transitions, 4344 flow [2024-06-27 23:12:31,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 360 transitions, 4192 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:12:31,062 INFO L231 Difference]: Finished difference. Result has 405 places, 350 transitions, 3590 flow [2024-06-27 23:12:31,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3590, PETRI_PLACES=405, PETRI_TRANSITIONS=350} [2024-06-27 23:12:31,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-27 23:12:31,063 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 350 transitions, 3590 flow [2024-06-27 23:12:31,063 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 23:12:31,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:31,063 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 23:12:31,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:12:31,064 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:31,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 285634380, now seen corresponding path program 9 times [2024-06-27 23:12:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:31,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596071569] [2024-06-27 23:12:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596071569] [2024-06-27 23:12:33,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596071569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:33,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738416085] [2024-06-27 23:12:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:33,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:33,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 350 transitions, 3590 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 23:12:33,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:33,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:34,398 INFO L124 PetriNetUnfolderBase]: 719/1392 cut-off events. [2024-06-27 23:12:34,399 INFO L125 PetriNetUnfolderBase]: For 250813/250813 co-relation queries the response was YES. [2024-06-27 23:12:34,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10155 conditions, 1392 events. 719/1392 cut-off events. For 250813/250813 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8566 event pairs, 73 based on Foata normal form. 1/1392 useless extension candidates. Maximal degree in co-relation 9964. Up to 1117 conditions per place. [2024-06-27 23:12:34,417 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 75 changer transitions 0/367 dead transitions. [2024-06-27 23:12:34,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 367 transitions, 5324 flow [2024-06-27 23:12:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:12:34,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:12:34,418 INFO L175 Difference]: Start difference. First operand has 405 places, 350 transitions, 3590 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:12:34,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 367 transitions, 5324 flow [2024-06-27 23:12:35,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 367 transitions, 5162 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:12:35,374 INFO L231 Difference]: Finished difference. Result has 408 places, 354 transitions, 3655 flow [2024-06-27 23:12:35,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3655, PETRI_PLACES=408, PETRI_TRANSITIONS=354} [2024-06-27 23:12:35,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-27 23:12:35,375 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 354 transitions, 3655 flow [2024-06-27 23:12:35,378 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 23:12:35,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:35,378 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 23:12:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:12:35,378 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:35,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2131942775, now seen corresponding path program 7 times [2024-06-27 23:12:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955690702] [2024-06-27 23:12:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955690702] [2024-06-27 23:12:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955690702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:12:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556199112] [2024-06-27 23:12:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:12:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:12:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:12:37,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:37,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 354 transitions, 3655 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 23:12:37,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:37,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:38,312 INFO L124 PetriNetUnfolderBase]: 723/1400 cut-off events. [2024-06-27 23:12:38,313 INFO L125 PetriNetUnfolderBase]: For 265385/265385 co-relation queries the response was YES. [2024-06-27 23:12:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10215 conditions, 1400 events. 723/1400 cut-off events. For 265385/265385 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8638 event pairs, 75 based on Foata normal form. 2/1401 useless extension candidates. Maximal degree in co-relation 10023. Up to 1195 conditions per place. [2024-06-27 23:12:38,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 314 selfloop transitions, 49 changer transitions 0/366 dead transitions. [2024-06-27 23:12:38,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 366 transitions, 4435 flow [2024-06-27 23:12:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:12:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:12:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:12:38,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-27 23:12:38,355 INFO L175 Difference]: Start difference. First operand has 408 places, 354 transitions, 3655 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:12:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 366 transitions, 4435 flow [2024-06-27 23:12:39,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 366 transitions, 4294 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:12:39,297 INFO L231 Difference]: Finished difference. Result has 412 places, 355 transitions, 3648 flow [2024-06-27 23:12:39,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3648, PETRI_PLACES=412, PETRI_TRANSITIONS=355} [2024-06-27 23:12:39,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-27 23:12:39,298 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 355 transitions, 3648 flow [2024-06-27 23:12:39,298 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 23:12:39,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:39,298 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 23:12:39,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:12:39,299 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:39,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1976907507, now seen corresponding path program 8 times [2024-06-27 23:12:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512257264] [2024-06-27 23:12:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:39,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:43,032 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 23:12:43,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:43,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512257264] [2024-06-27 23:12:43,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512257264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:43,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:43,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:43,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034929112] [2024-06-27 23:12:43,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:43,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:43,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:43,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:43,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 355 transitions, 3648 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 23:12:43,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:43,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:43,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:43,843 INFO L124 PetriNetUnfolderBase]: 734/1421 cut-off events. [2024-06-27 23:12:43,844 INFO L125 PetriNetUnfolderBase]: For 293069/293069 co-relation queries the response was YES. [2024-06-27 23:12:43,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 1421 events. 734/1421 cut-off events. For 293069/293069 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8780 event pairs, 74 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 10485. Up to 1077 conditions per place. [2024-06-27 23:12:43,859 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 91 changer transitions 0/373 dead transitions. [2024-06-27 23:12:43,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 373 transitions, 4860 flow [2024-06-27 23:12:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 23:12:43,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-27 23:12:43,860 INFO L175 Difference]: Start difference. First operand has 412 places, 355 transitions, 3648 flow. Second operand 11 states and 151 transitions. [2024-06-27 23:12:43,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 373 transitions, 4860 flow [2024-06-27 23:12:44,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 373 transitions, 4713 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:12:44,956 INFO L231 Difference]: Finished difference. Result has 415 places, 360 transitions, 3835 flow [2024-06-27 23:12:44,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3835, PETRI_PLACES=415, PETRI_TRANSITIONS=360} [2024-06-27 23:12:44,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-27 23:12:44,956 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 360 transitions, 3835 flow [2024-06-27 23:12:44,956 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 23:12:44,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:44,957 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 23:12:44,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:12:44,957 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:44,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1976898207, now seen corresponding path program 9 times [2024-06-27 23:12:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867443339] [2024-06-27 23:12:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:44,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867443339] [2024-06-27 23:12:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867443339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348992657] [2024-06-27 23:12:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:47,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:47,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:47,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:47,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:47,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 360 transitions, 3835 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 23:12:47,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:47,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:47,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:48,463 INFO L124 PetriNetUnfolderBase]: 741/1434 cut-off events. [2024-06-27 23:12:48,463 INFO L125 PetriNetUnfolderBase]: For 297498/297498 co-relation queries the response was YES. [2024-06-27 23:12:48,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10863 conditions, 1434 events. 741/1434 cut-off events. For 297498/297498 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8876 event pairs, 76 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 10668. Up to 1108 conditions per place. [2024-06-27 23:12:48,483 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 92 changer transitions 0/374 dead transitions. [2024-06-27 23:12:48,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 374 transitions, 4661 flow [2024-06-27 23:12:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:12:48,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-27 23:12:48,485 INFO L175 Difference]: Start difference. First operand has 415 places, 360 transitions, 3835 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:12:48,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 374 transitions, 4661 flow [2024-06-27 23:12:49,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 374 transitions, 4443 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 23:12:49,601 INFO L231 Difference]: Finished difference. Result has 421 places, 363 transitions, 3867 flow [2024-06-27 23:12:49,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3631, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3867, PETRI_PLACES=421, PETRI_TRANSITIONS=363} [2024-06-27 23:12:49,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-27 23:12:49,602 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 363 transitions, 3867 flow [2024-06-27 23:12:49,602 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 23:12:49,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:49,602 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 23:12:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:12:49,602 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1505728934, now seen corresponding path program 10 times [2024-06-27 23:12:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:49,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028503212] [2024-06-27 23:12:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:49,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028503212] [2024-06-27 23:12:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028503212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:54,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:12:54,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812559571] [2024-06-27 23:12:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:12:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:12:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:12:54,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:12:54,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 363 transitions, 3867 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 23:12:54,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:54,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:12:54,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:12:55,770 INFO L124 PetriNetUnfolderBase]: 744/1435 cut-off events. [2024-06-27 23:12:55,770 INFO L125 PetriNetUnfolderBase]: For 288528/288528 co-relation queries the response was YES. [2024-06-27 23:12:55,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 1435 events. 744/1435 cut-off events. For 288528/288528 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8882 event pairs, 74 based on Foata normal form. 1/1435 useless extension candidates. Maximal degree in co-relation 10659. Up to 826 conditions per place. [2024-06-27 23:12:55,790 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 182 changer transitions 0/377 dead transitions. [2024-06-27 23:12:55,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 377 transitions, 5295 flow [2024-06-27 23:12:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:12:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:12:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-27 23:12:55,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:12:55,791 INFO L175 Difference]: Start difference. First operand has 421 places, 363 transitions, 3867 flow. Second operand 11 states and 155 transitions. [2024-06-27 23:12:55,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 377 transitions, 5295 flow [2024-06-27 23:12:57,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 377 transitions, 5095 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:12:57,007 INFO L231 Difference]: Finished difference. Result has 424 places, 365 transitions, 4070 flow [2024-06-27 23:12:57,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4070, PETRI_PLACES=424, PETRI_TRANSITIONS=365} [2024-06-27 23:12:57,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-27 23:12:57,008 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 365 transitions, 4070 flow [2024-06-27 23:12:57,008 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 23:12:57,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:12:57,009 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 23:12:57,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:12:57,009 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:12:57,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:12:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash 19471818, now seen corresponding path program 11 times [2024-06-27 23:12:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:12:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490236472] [2024-06-27 23:12:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:12:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:12:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:12:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:12:59,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:12:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490236472] [2024-06-27 23:12:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490236472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:12:59,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:12:59,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:12:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729164842] [2024-06-27 23:12:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:12:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:12:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:12:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:12:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:12:59,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:12:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 365 transitions, 4070 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 23:12:59,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:12:59,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:12:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:00,161 INFO L124 PetriNetUnfolderBase]: 747/1440 cut-off events. [2024-06-27 23:13:00,161 INFO L125 PetriNetUnfolderBase]: For 292696/292696 co-relation queries the response was YES. [2024-06-27 23:13:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 1440 events. 747/1440 cut-off events. For 292696/292696 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8935 event pairs, 74 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 10896. Up to 1199 conditions per place. [2024-06-27 23:13:00,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 306 selfloop transitions, 68 changer transitions 0/378 dead transitions. [2024-06-27 23:13:00,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 378 transitions, 5200 flow [2024-06-27 23:13:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:13:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:13:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 23:13:00,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2024-06-27 23:13:00,182 INFO L175 Difference]: Start difference. First operand has 424 places, 365 transitions, 4070 flow. Second operand 10 states and 148 transitions. [2024-06-27 23:13:00,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 378 transitions, 5200 flow [2024-06-27 23:13:01,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 378 transitions, 4808 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:13:01,386 INFO L231 Difference]: Finished difference. Result has 425 places, 367 transitions, 3865 flow [2024-06-27 23:13:01,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3865, PETRI_PLACES=425, PETRI_TRANSITIONS=367} [2024-06-27 23:13:01,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-27 23:13:01,400 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 367 transitions, 3865 flow [2024-06-27 23:13:01,401 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 23:13:01,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:01,401 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 23:13:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:13:01,401 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:01,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:01,401 INFO L85 PathProgramCache]: Analyzing trace with hash 19270008, now seen corresponding path program 12 times [2024-06-27 23:13:01,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5246468] [2024-06-27 23:13:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:01,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5246468] [2024-06-27 23:13:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5246468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139209654] [2024-06-27 23:13:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:04,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:04,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:04,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 367 transitions, 3865 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 23:13:04,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:04,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:04,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:05,386 INFO L124 PetriNetUnfolderBase]: 745/1441 cut-off events. [2024-06-27 23:13:05,386 INFO L125 PetriNetUnfolderBase]: For 282270/282270 co-relation queries the response was YES. [2024-06-27 23:13:05,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10668 conditions, 1441 events. 745/1441 cut-off events. For 282270/282270 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8935 event pairs, 78 based on Foata normal form. 1/1441 useless extension candidates. Maximal degree in co-relation 10470. Up to 1224 conditions per place. [2024-06-27 23:13:05,406 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 315 selfloop transitions, 59 changer transitions 0/377 dead transitions. [2024-06-27 23:13:05,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 377 transitions, 4635 flow [2024-06-27 23:13:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:13:05,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 23:13:05,408 INFO L175 Difference]: Start difference. First operand has 425 places, 367 transitions, 3865 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:13:05,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 377 transitions, 4635 flow [2024-06-27 23:13:06,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 377 transitions, 4447 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:13:06,631 INFO L231 Difference]: Finished difference. Result has 428 places, 367 transitions, 3800 flow [2024-06-27 23:13:06,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3800, PETRI_PLACES=428, PETRI_TRANSITIONS=367} [2024-06-27 23:13:06,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-27 23:13:06,632 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 367 transitions, 3800 flow [2024-06-27 23:13:06,632 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 23:13:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:06,632 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 23:13:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:13:06,633 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:06,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -55903886, now seen corresponding path program 13 times [2024-06-27 23:13:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207573983] [2024-06-27 23:13:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:10,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:10,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207573983] [2024-06-27 23:13:10,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207573983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:10,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:10,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:10,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996345786] [2024-06-27 23:13:10,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:10,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:10,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:10,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:10,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:13:10,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 367 transitions, 3800 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 23:13:10,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:10,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:13:10,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:11,016 INFO L124 PetriNetUnfolderBase]: 743/1434 cut-off events. [2024-06-27 23:13:11,017 INFO L125 PetriNetUnfolderBase]: For 274084/274084 co-relation queries the response was YES. [2024-06-27 23:13:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10442 conditions, 1434 events. 743/1434 cut-off events. For 274084/274084 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8913 event pairs, 76 based on Foata normal form. 1/1434 useless extension candidates. Maximal degree in co-relation 10242. Up to 826 conditions per place. [2024-06-27 23:13:11,036 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 174 changer transitions 0/380 dead transitions. [2024-06-27 23:13:11,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 380 transitions, 5219 flow [2024-06-27 23:13:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:11,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:11,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:13:11,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:13:11,037 INFO L175 Difference]: Start difference. First operand has 428 places, 367 transitions, 3800 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:13:11,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 380 transitions, 5219 flow [2024-06-27 23:13:12,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 380 transitions, 5042 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 23:13:12,154 INFO L231 Difference]: Finished difference. Result has 428 places, 367 transitions, 3976 flow [2024-06-27 23:13:12,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3976, PETRI_PLACES=428, PETRI_TRANSITIONS=367} [2024-06-27 23:13:12,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-27 23:13:12,154 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 367 transitions, 3976 flow [2024-06-27 23:13:12,154 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 23:13:12,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:12,155 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 23:13:12,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:13:12,155 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:12,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash -55896167, now seen corresponding path program 10 times [2024-06-27 23:13:12,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:12,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881638678] [2024-06-27 23:13:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:15,676 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 23:13:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881638678] [2024-06-27 23:13:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881638678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473917323] [2024-06-27 23:13:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:15,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:15,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 367 transitions, 3976 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 23:13:15,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:15,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:15,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:16,483 INFO L124 PetriNetUnfolderBase]: 747/1442 cut-off events. [2024-06-27 23:13:16,483 INFO L125 PetriNetUnfolderBase]: For 291114/291114 co-relation queries the response was YES. [2024-06-27 23:13:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10738 conditions, 1442 events. 747/1442 cut-off events. For 291114/291114 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8970 event pairs, 74 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 10537. Up to 1129 conditions per place. [2024-06-27 23:13:16,503 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 89 changer transitions 0/380 dead transitions. [2024-06-27 23:13:16,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 380 transitions, 4787 flow [2024-06-27 23:13:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:13:16,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:13:16,505 INFO L175 Difference]: Start difference. First operand has 428 places, 367 transitions, 3976 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:13:16,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 380 transitions, 4787 flow [2024-06-27 23:13:17,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 380 transitions, 4398 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:13:17,694 INFO L231 Difference]: Finished difference. Result has 428 places, 369 transitions, 3804 flow [2024-06-27 23:13:17,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3804, PETRI_PLACES=428, PETRI_TRANSITIONS=369} [2024-06-27 23:13:17,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-06-27 23:13:17,695 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 369 transitions, 3804 flow [2024-06-27 23:13:17,695 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 23:13:17,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:17,695 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 23:13:17,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:13:17,696 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:17,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:17,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1739750405, now seen corresponding path program 11 times [2024-06-27 23:13:17,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:17,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229487616] [2024-06-27 23:13:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229487616] [2024-06-27 23:13:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229487616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:20,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:20,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723589177] [2024-06-27 23:13:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:20,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:20,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 369 transitions, 3804 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 23:13:20,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:20,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:20,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:21,011 INFO L124 PetriNetUnfolderBase]: 751/1454 cut-off events. [2024-06-27 23:13:21,011 INFO L125 PetriNetUnfolderBase]: For 293806/293806 co-relation queries the response was YES. [2024-06-27 23:13:21,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10646 conditions, 1454 events. 751/1454 cut-off events. For 293806/293806 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9070 event pairs, 74 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 10444. Up to 1222 conditions per place. [2024-06-27 23:13:21,027 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 316 selfloop transitions, 61 changer transitions 0/380 dead transitions. [2024-06-27 23:13:21,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 380 transitions, 4614 flow [2024-06-27 23:13:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:13:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:13:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:13:21,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:13:21,028 INFO L175 Difference]: Start difference. First operand has 428 places, 369 transitions, 3804 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:13:21,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 380 transitions, 4614 flow [2024-06-27 23:13:22,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 380 transitions, 4423 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:13:22,145 INFO L231 Difference]: Finished difference. Result has 431 places, 370 transitions, 3775 flow [2024-06-27 23:13:22,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3775, PETRI_PLACES=431, PETRI_TRANSITIONS=370} [2024-06-27 23:13:22,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-27 23:13:22,145 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 370 transitions, 3775 flow [2024-06-27 23:13:22,146 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 23:13:22,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:22,146 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 23:13:22,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:13:22,146 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:22,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1739758124, now seen corresponding path program 14 times [2024-06-27 23:13:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758100151] [2024-06-27 23:13:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:25,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758100151] [2024-06-27 23:13:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758100151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146809713] [2024-06-27 23:13:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:25,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:25,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:25,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:25,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 370 transitions, 3775 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 23:13:25,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:25,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:25,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:26,027 INFO L124 PetriNetUnfolderBase]: 754/1455 cut-off events. [2024-06-27 23:13:26,027 INFO L125 PetriNetUnfolderBase]: For 285215/285215 co-relation queries the response was YES. [2024-06-27 23:13:26,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10618 conditions, 1455 events. 754/1455 cut-off events. For 285215/285215 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9042 event pairs, 74 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 10415. Up to 1156 conditions per place. [2024-06-27 23:13:26,046 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 88 changer transitions 0/384 dead transitions. [2024-06-27 23:13:26,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 384 transitions, 5243 flow [2024-06-27 23:13:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-27 23:13:26,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:13:26,048 INFO L175 Difference]: Start difference. First operand has 431 places, 370 transitions, 3775 flow. Second operand 11 states and 155 transitions. [2024-06-27 23:13:26,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 384 transitions, 5243 flow [2024-06-27 23:13:27,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 384 transitions, 5091 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:13:27,294 INFO L231 Difference]: Finished difference. Result has 434 places, 372 transitions, 3840 flow [2024-06-27 23:13:27,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3840, PETRI_PLACES=434, PETRI_TRANSITIONS=372} [2024-06-27 23:13:27,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-06-27 23:13:27,294 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 372 transitions, 3840 flow [2024-06-27 23:13:27,295 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 23:13:27,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:27,295 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 23:13:27,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:13:27,295 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash -48746327, now seen corresponding path program 12 times [2024-06-27 23:13:27,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:27,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008395511] [2024-06-27 23:13:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:27,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008395511] [2024-06-27 23:13:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008395511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993738310] [2024-06-27 23:13:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:31,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:31,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 372 transitions, 3840 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 23:13:31,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:31,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:31,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:31,762 INFO L124 PetriNetUnfolderBase]: 751/1450 cut-off events. [2024-06-27 23:13:31,763 INFO L125 PetriNetUnfolderBase]: For 275388/275388 co-relation queries the response was YES. [2024-06-27 23:13:31,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10280 conditions, 1450 events. 751/1450 cut-off events. For 275388/275388 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9037 event pairs, 73 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 10076. Up to 1137 conditions per place. [2024-06-27 23:13:31,783 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 292 selfloop transitions, 88 changer transitions 0/383 dead transitions. [2024-06-27 23:13:31,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 383 transitions, 4624 flow [2024-06-27 23:13:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:13:31,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:13:31,784 INFO L175 Difference]: Start difference. First operand has 434 places, 372 transitions, 3840 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:13:31,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 383 transitions, 4624 flow [2024-06-27 23:13:33,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 383 transitions, 4413 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:13:33,083 INFO L231 Difference]: Finished difference. Result has 437 places, 372 transitions, 3809 flow [2024-06-27 23:13:33,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3809, PETRI_PLACES=437, PETRI_TRANSITIONS=372} [2024-06-27 23:13:33,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 23:13:33,084 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 372 transitions, 3809 flow [2024-06-27 23:13:33,084 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 23:13:33,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:33,084 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 23:13:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:13:33,084 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:33,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash -48754046, now seen corresponding path program 15 times [2024-06-27 23:13:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857117076] [2024-06-27 23:13:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:33,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:36,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857117076] [2024-06-27 23:13:36,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857117076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:36,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:36,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304893682] [2024-06-27 23:13:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:36,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:13:36,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 372 transitions, 3809 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 23:13:36,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:36,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:13:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:37,335 INFO L124 PetriNetUnfolderBase]: 749/1447 cut-off events. [2024-06-27 23:13:37,335 INFO L125 PetriNetUnfolderBase]: For 251659/251659 co-relation queries the response was YES. [2024-06-27 23:13:37,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10059 conditions, 1447 events. 749/1447 cut-off events. For 251659/251659 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9030 event pairs, 73 based on Foata normal form. 1/1447 useless extension candidates. Maximal degree in co-relation 9854. Up to 839 conditions per place. [2024-06-27 23:13:37,354 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 174 changer transitions 0/384 dead transitions. [2024-06-27 23:13:37,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 384 transitions, 5249 flow [2024-06-27 23:13:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:13:37,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-27 23:13:37,355 INFO L175 Difference]: Start difference. First operand has 437 places, 372 transitions, 3809 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:13:37,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 384 transitions, 5249 flow [2024-06-27 23:13:38,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 384 transitions, 5015 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 23:13:38,418 INFO L231 Difference]: Finished difference. Result has 436 places, 372 transitions, 3928 flow [2024-06-27 23:13:38,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3928, PETRI_PLACES=436, PETRI_TRANSITIONS=372} [2024-06-27 23:13:38,419 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-27 23:13:38,419 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 372 transitions, 3928 flow [2024-06-27 23:13:38,419 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 23:13:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:38,419 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 23:13:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:13:38,419 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:38,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1739959934, now seen corresponding path program 16 times [2024-06-27 23:13:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527293444] [2024-06-27 23:13:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527293444] [2024-06-27 23:13:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527293444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:41,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473915592] [2024-06-27 23:13:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:41,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:42,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:42,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 372 transitions, 3928 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 23:13:42,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:42,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:42,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:42,941 INFO L124 PetriNetUnfolderBase]: 747/1444 cut-off events. [2024-06-27 23:13:42,941 INFO L125 PetriNetUnfolderBase]: For 241648/241648 co-relation queries the response was YES. [2024-06-27 23:13:42,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10027 conditions, 1444 events. 747/1444 cut-off events. For 241648/241648 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9011 event pairs, 73 based on Foata normal form. 1/1444 useless extension candidates. Maximal degree in co-relation 9821. Up to 1146 conditions per place. [2024-06-27 23:13:42,959 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 93 changer transitions 0/384 dead transitions. [2024-06-27 23:13:42,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 384 transitions, 5372 flow [2024-06-27 23:13:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:13:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:13:42,961 INFO L175 Difference]: Start difference. First operand has 436 places, 372 transitions, 3928 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:13:42,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 384 transitions, 5372 flow [2024-06-27 23:13:43,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 384 transitions, 4993 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:13:43,976 INFO L231 Difference]: Finished difference. Result has 437 places, 372 transitions, 3740 flow [2024-06-27 23:13:43,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3740, PETRI_PLACES=437, PETRI_TRANSITIONS=372} [2024-06-27 23:13:43,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 23:13:43,977 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 372 transitions, 3740 flow [2024-06-27 23:13:43,977 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 23:13:43,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:43,977 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 23:13:43,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:13:43,977 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:43,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 220568787, now seen corresponding path program 13 times [2024-06-27 23:13:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299547172] [2024-06-27 23:13:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:46,218 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 23:13:46,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:46,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299547172] [2024-06-27 23:13:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299547172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:46,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:46,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:13:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872574102] [2024-06-27 23:13:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:46,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:13:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:13:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:13:46,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:46,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 372 transitions, 3740 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 23:13:46,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:46,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:46,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:46,970 INFO L124 PetriNetUnfolderBase]: 751/1452 cut-off events. [2024-06-27 23:13:46,970 INFO L125 PetriNetUnfolderBase]: For 258374/258374 co-relation queries the response was YES. [2024-06-27 23:13:46,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9933 conditions, 1452 events. 751/1452 cut-off events. For 258374/258374 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9059 event pairs, 73 based on Foata normal form. 2/1453 useless extension candidates. Maximal degree in co-relation 9726. Up to 1224 conditions per place. [2024-06-27 23:13:46,990 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 319 selfloop transitions, 62 changer transitions 0/384 dead transitions. [2024-06-27 23:13:46,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 384 transitions, 4562 flow [2024-06-27 23:13:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:13:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:13:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:13:46,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-27 23:13:46,991 INFO L175 Difference]: Start difference. First operand has 437 places, 372 transitions, 3740 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:13:46,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 384 transitions, 4562 flow [2024-06-27 23:13:48,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 384 transitions, 4355 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:13:48,064 INFO L231 Difference]: Finished difference. Result has 436 places, 373 transitions, 3699 flow [2024-06-27 23:13:48,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3699, PETRI_PLACES=436, PETRI_TRANSITIONS=373} [2024-06-27 23:13:48,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-27 23:13:48,065 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 373 transitions, 3699 flow [2024-06-27 23:13:48,065 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 23:13:48,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:48,065 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 23:13:48,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:13:48,066 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:48,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:48,066 INFO L85 PathProgramCache]: Analyzing trace with hash 199415051, now seen corresponding path program 14 times [2024-06-27 23:13:48,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:48,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060194855] [2024-06-27 23:13:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:48,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:13:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060194855] [2024-06-27 23:13:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060194855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:51,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984108083] [2024-06-27 23:13:51,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:51,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:51,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:51,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:51,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:52,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:13:52,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 373 transitions, 3699 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 23:13:52,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:52,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:13:52,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:52,978 INFO L124 PetriNetUnfolderBase]: 755/1464 cut-off events. [2024-06-27 23:13:52,978 INFO L125 PetriNetUnfolderBase]: For 260950/260950 co-relation queries the response was YES. [2024-06-27 23:13:52,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 1464 events. 755/1464 cut-off events. For 260950/260950 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9151 event pairs, 122 based on Foata normal form. 2/1465 useless extension candidates. Maximal degree in co-relation 9769. Up to 1325 conditions per place. [2024-06-27 23:13:52,994 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 355 selfloop transitions, 27 changer transitions 0/385 dead transitions. [2024-06-27 23:13:52,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 385 transitions, 4525 flow [2024-06-27 23:13:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:13:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:13:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 23:13:52,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 23:13:52,996 INFO L175 Difference]: Start difference. First operand has 436 places, 373 transitions, 3699 flow. Second operand 12 states and 135 transitions. [2024-06-27 23:13:52,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 385 transitions, 4525 flow [2024-06-27 23:13:54,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 385 transitions, 4369 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:13:54,165 INFO L231 Difference]: Finished difference. Result has 440 places, 374 transitions, 3641 flow [2024-06-27 23:13:54,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3543, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3641, PETRI_PLACES=440, PETRI_TRANSITIONS=374} [2024-06-27 23:13:54,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-27 23:13:54,166 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 374 transitions, 3641 flow [2024-06-27 23:13:54,166 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 23:13:54,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:54,166 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 23:13:54,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:13:54,167 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:54,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:54,167 INFO L85 PathProgramCache]: Analyzing trace with hash 220568508, now seen corresponding path program 17 times [2024-06-27 23:13:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:54,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46975763] [2024-06-27 23:13:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:13:56,583 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 23:13:56,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:13:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46975763] [2024-06-27 23:13:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46975763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:13:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:13:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:13:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32418300] [2024-06-27 23:13:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:13:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:13:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:13:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:13:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:13:56,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:13:56,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 374 transitions, 3641 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 23:13:56,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:13:56,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:13:56,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:13:57,522 INFO L124 PetriNetUnfolderBase]: 758/1467 cut-off events. [2024-06-27 23:13:57,522 INFO L125 PetriNetUnfolderBase]: For 250662/250662 co-relation queries the response was YES. [2024-06-27 23:13:57,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9905 conditions, 1467 events. 758/1467 cut-off events. For 250662/250662 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9210 event pairs, 73 based on Foata normal form. 1/1467 useless extension candidates. Maximal degree in co-relation 9696. Up to 1193 conditions per place. [2024-06-27 23:13:57,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 303 selfloop transitions, 82 changer transitions 0/388 dead transitions. [2024-06-27 23:13:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 388 transitions, 5143 flow [2024-06-27 23:13:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:13:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:13:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 23:13:57,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44574780058651026 [2024-06-27 23:13:57,543 INFO L175 Difference]: Start difference. First operand has 440 places, 374 transitions, 3641 flow. Second operand 11 states and 152 transitions. [2024-06-27 23:13:57,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 388 transitions, 5143 flow [2024-06-27 23:13:58,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 388 transitions, 5055 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 23:13:58,530 INFO L231 Difference]: Finished difference. Result has 441 places, 376 transitions, 3760 flow [2024-06-27 23:13:58,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3760, PETRI_PLACES=441, PETRI_TRANSITIONS=376} [2024-06-27 23:13:58,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 23:13:58,544 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 376 transitions, 3760 flow [2024-06-27 23:13:58,545 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 23:13:58,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:13:58,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:13:58,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:13:58,545 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:13:58,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:13:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 292776780, now seen corresponding path program 18 times [2024-06-27 23:13:58,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:13:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286303849] [2024-06-27 23:13:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:13:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:13:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:01,514 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 23:14:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286303849] [2024-06-27 23:14:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286303849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:01,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:01,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265302291] [2024-06-27 23:14:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:14:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 376 transitions, 3760 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 23:14:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:14:01,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:02,607 INFO L124 PetriNetUnfolderBase]: 754/1465 cut-off events. [2024-06-27 23:14:02,607 INFO L125 PetriNetUnfolderBase]: For 237835/237835 co-relation queries the response was YES. [2024-06-27 23:14:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9592 conditions, 1465 events. 754/1465 cut-off events. For 237835/237835 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9189 event pairs, 77 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 9382. Up to 1162 conditions per place. [2024-06-27 23:14:02,628 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 94 changer transitions 0/386 dead transitions. [2024-06-27 23:14:02,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 386 transitions, 4548 flow [2024-06-27 23:14:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 23:14:02,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-27 23:14:02,630 INFO L175 Difference]: Start difference. First operand has 441 places, 376 transitions, 3760 flow. Second operand 11 states and 151 transitions. [2024-06-27 23:14:02,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 386 transitions, 4548 flow [2024-06-27 23:14:03,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 386 transitions, 4294 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 23:14:03,625 INFO L231 Difference]: Finished difference. Result has 444 places, 376 transitions, 3710 flow [2024-06-27 23:14:03,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3710, PETRI_PLACES=444, PETRI_TRANSITIONS=376} [2024-06-27 23:14:03,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 23:14:03,626 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 376 transitions, 3710 flow [2024-06-27 23:14:03,626 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 23:14:03,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:03,626 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 23:14:03,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:14:03,626 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:03,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:03,627 INFO L85 PathProgramCache]: Analyzing trace with hash 293053269, now seen corresponding path program 15 times [2024-06-27 23:14:03,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:03,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857221784] [2024-06-27 23:14:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:03,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857221784] [2024-06-27 23:14:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857221784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:06,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:06,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141611844] [2024-06-27 23:14:06,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:06,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:06,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:07,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:14:07,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 376 transitions, 3710 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 23:14:07,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:07,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:14:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:07,814 INFO L124 PetriNetUnfolderBase]: 765/1482 cut-off events. [2024-06-27 23:14:07,814 INFO L125 PetriNetUnfolderBase]: For 274508/274508 co-relation queries the response was YES. [2024-06-27 23:14:07,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 1482 events. 765/1482 cut-off events. For 274508/274508 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9329 event pairs, 76 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 9940. Up to 1217 conditions per place. [2024-06-27 23:14:07,835 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 319 selfloop transitions, 69 changer transitions 0/391 dead transitions. [2024-06-27 23:14:07,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 391 transitions, 4934 flow [2024-06-27 23:14:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:14:07,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:14:07,836 INFO L175 Difference]: Start difference. First operand has 444 places, 376 transitions, 3710 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:14:07,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 391 transitions, 4934 flow [2024-06-27 23:14:08,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 391 transitions, 4716 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:14:08,915 INFO L231 Difference]: Finished difference. Result has 443 places, 378 transitions, 3720 flow [2024-06-27 23:14:08,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3720, PETRI_PLACES=443, PETRI_TRANSITIONS=378} [2024-06-27 23:14:08,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-27 23:14:08,915 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 378 transitions, 3720 flow [2024-06-27 23:14:08,916 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 23:14:08,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:08,916 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 23:14:08,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:14:08,916 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:08,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:08,917 INFO L85 PathProgramCache]: Analyzing trace with hash 293043969, now seen corresponding path program 16 times [2024-06-27 23:14:08,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:08,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910202624] [2024-06-27 23:14:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:08,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:12,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:12,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910202624] [2024-06-27 23:14:12,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910202624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:12,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:12,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:12,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021229500] [2024-06-27 23:14:12,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:12,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:12,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:12,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:12,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:14:12,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 378 transitions, 3720 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 23:14:12,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:12,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:14:12,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:12,924 INFO L124 PetriNetUnfolderBase]: 762/1477 cut-off events. [2024-06-27 23:14:12,924 INFO L125 PetriNetUnfolderBase]: For 242865/242865 co-relation queries the response was YES. [2024-06-27 23:14:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9700 conditions, 1477 events. 762/1477 cut-off events. For 242865/242865 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9313 event pairs, 77 based on Foata normal form. 2/1478 useless extension candidates. Maximal degree in co-relation 9489. Up to 1247 conditions per place. [2024-06-27 23:14:12,946 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 321 selfloop transitions, 65 changer transitions 0/389 dead transitions. [2024-06-27 23:14:12,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 389 transitions, 4516 flow [2024-06-27 23:14:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:14:12,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:14:12,948 INFO L175 Difference]: Start difference. First operand has 443 places, 378 transitions, 3720 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:14:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 389 transitions, 4516 flow [2024-06-27 23:14:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 389 transitions, 4362 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 23:14:13,983 INFO L231 Difference]: Finished difference. Result has 447 places, 378 transitions, 3700 flow [2024-06-27 23:14:13,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3700, PETRI_PLACES=447, PETRI_TRANSITIONS=378} [2024-06-27 23:14:13,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-27 23:14:13,983 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 378 transitions, 3700 flow [2024-06-27 23:14:13,983 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 23:14:13,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:13,984 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 23:14:13,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:14:13,984 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:13,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2068709119, now seen corresponding path program 17 times [2024-06-27 23:14:13,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201987528] [2024-06-27 23:14:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:17,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:17,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201987528] [2024-06-27 23:14:17,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201987528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:17,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:17,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:14:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109600722] [2024-06-27 23:14:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:17,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:14:17,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:14:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:14:17,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:17,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 378 transitions, 3700 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 23:14:17,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:17,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:17,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:18,204 INFO L124 PetriNetUnfolderBase]: 773/1502 cut-off events. [2024-06-27 23:14:18,204 INFO L125 PetriNetUnfolderBase]: For 273741/273741 co-relation queries the response was YES. [2024-06-27 23:14:18,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1502 events. 773/1502 cut-off events. For 273741/273741 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9478 event pairs, 125 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 10046. Up to 1347 conditions per place. [2024-06-27 23:14:18,225 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 366 selfloop transitions, 24 changer transitions 0/393 dead transitions. [2024-06-27 23:14:18,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 393 transitions, 4932 flow [2024-06-27 23:14:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:14:18,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 23:14:18,226 INFO L175 Difference]: Start difference. First operand has 447 places, 378 transitions, 3700 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:14:18,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 393 transitions, 4932 flow [2024-06-27 23:14:19,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 393 transitions, 4788 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:14:19,334 INFO L231 Difference]: Finished difference. Result has 448 places, 380 transitions, 3694 flow [2024-06-27 23:14:19,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3694, PETRI_PLACES=448, PETRI_TRANSITIONS=380} [2024-06-27 23:14:19,334 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-27 23:14:19,334 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 380 transitions, 3694 flow [2024-06-27 23:14:19,334 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 23:14:19,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:19,334 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 23:14:19,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:14:19,335 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:19,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2069907711, now seen corresponding path program 18 times [2024-06-27 23:14:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061970965] [2024-06-27 23:14:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:19,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061970965] [2024-06-27 23:14:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061970965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:22,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:14:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014330303] [2024-06-27 23:14:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:22,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:14:22,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:14:22,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:14:22,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:22,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 380 transitions, 3694 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 23:14:22,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:22,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:22,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:23,517 INFO L124 PetriNetUnfolderBase]: 770/1493 cut-off events. [2024-06-27 23:14:23,517 INFO L125 PetriNetUnfolderBase]: For 248911/248911 co-relation queries the response was YES. [2024-06-27 23:14:23,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 1493 events. 770/1493 cut-off events. For 248911/248911 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9449 event pairs, 124 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 9577. Up to 1365 conditions per place. [2024-06-27 23:14:23,539 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 366 selfloop transitions, 22 changer transitions 0/391 dead transitions. [2024-06-27 23:14:23,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 391 transitions, 4494 flow [2024-06-27 23:14:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:14:23,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 23:14:23,541 INFO L175 Difference]: Start difference. First operand has 448 places, 380 transitions, 3694 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:14:23,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 391 transitions, 4494 flow [2024-06-27 23:14:24,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 391 transitions, 4388 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 23:14:24,614 INFO L231 Difference]: Finished difference. Result has 452 places, 380 transitions, 3636 flow [2024-06-27 23:14:24,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3636, PETRI_PLACES=452, PETRI_TRANSITIONS=380} [2024-06-27 23:14:24,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-27 23:14:24,615 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 380 transitions, 3636 flow [2024-06-27 23:14:24,615 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 23:14:24,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:24,615 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 23:14:24,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:14:24,616 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:24,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2059781119, now seen corresponding path program 19 times [2024-06-27 23:14:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:24,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159026147] [2024-06-27 23:14:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:24,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:29,332 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 23:14:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159026147] [2024-06-27 23:14:29,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159026147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:29,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:29,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:29,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003576462] [2024-06-27 23:14:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:29,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:29,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:29,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:29,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 380 transitions, 3636 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 23:14:29,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:29,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:29,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:30,400 INFO L124 PetriNetUnfolderBase]: 774/1501 cut-off events. [2024-06-27 23:14:30,400 INFO L125 PetriNetUnfolderBase]: For 250867/250867 co-relation queries the response was YES. [2024-06-27 23:14:30,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9785 conditions, 1501 events. 774/1501 cut-off events. For 250867/250867 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9481 event pairs, 126 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 9569. Up to 1364 conditions per place. [2024-06-27 23:14:30,422 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 363 selfloop transitions, 27 changer transitions 0/393 dead transitions. [2024-06-27 23:14:30,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 393 transitions, 4486 flow [2024-06-27 23:14:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:14:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:14:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-27 23:14:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3598014888337469 [2024-06-27 23:14:30,424 INFO L175 Difference]: Start difference. First operand has 452 places, 380 transitions, 3636 flow. Second operand 13 states and 145 transitions. [2024-06-27 23:14:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 393 transitions, 4486 flow [2024-06-27 23:14:31,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 393 transitions, 4436 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:14:31,440 INFO L231 Difference]: Finished difference. Result has 455 places, 381 transitions, 3690 flow [2024-06-27 23:14:31,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3690, PETRI_PLACES=455, PETRI_TRANSITIONS=381} [2024-06-27 23:14:31,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-27 23:14:31,441 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 381 transitions, 3690 flow [2024-06-27 23:14:31,441 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 23:14:31,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:31,441 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 23:14:31,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:14:31,442 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:31,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2070174900, now seen corresponding path program 19 times [2024-06-27 23:14:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471035635] [2024-06-27 23:14:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:35,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471035635] [2024-06-27 23:14:35,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471035635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:35,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578979857] [2024-06-27 23:14:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:35,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:35,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 381 transitions, 3690 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 23:14:35,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:35,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:36,274 INFO L124 PetriNetUnfolderBase]: 772/1498 cut-off events. [2024-06-27 23:14:36,274 INFO L125 PetriNetUnfolderBase]: For 223948/223948 co-relation queries the response was YES. [2024-06-27 23:14:36,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1498 events. 772/1498 cut-off events. For 223948/223948 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9491 event pairs, 126 based on Foata normal form. 1/1498 useless extension candidates. Maximal degree in co-relation 9403. Up to 1354 conditions per place. [2024-06-27 23:14:36,296 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 358 selfloop transitions, 30 changer transitions 0/391 dead transitions. [2024-06-27 23:14:36,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 391 transitions, 4488 flow [2024-06-27 23:14:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:14:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:14:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 23:14:36,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 23:14:36,298 INFO L175 Difference]: Start difference. First operand has 455 places, 381 transitions, 3690 flow. Second operand 12 states and 136 transitions. [2024-06-27 23:14:36,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 391 transitions, 4488 flow [2024-06-27 23:14:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 391 transitions, 4372 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-06-27 23:14:37,324 INFO L231 Difference]: Finished difference. Result has 456 places, 381 transitions, 3639 flow [2024-06-27 23:14:37,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3639, PETRI_PLACES=456, PETRI_TRANSITIONS=381} [2024-06-27 23:14:37,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-27 23:14:37,324 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 381 transitions, 3639 flow [2024-06-27 23:14:37,325 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 23:14:37,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:37,325 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 23:14:37,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:14:37,325 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:37,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1745157291, now seen corresponding path program 20 times [2024-06-27 23:14:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:37,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749032320] [2024-06-27 23:14:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:37,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749032320] [2024-06-27 23:14:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749032320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:40,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:14:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457746990] [2024-06-27 23:14:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:14:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:14:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:14:40,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:40,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 381 transitions, 3639 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 23:14:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:41,386 INFO L124 PetriNetUnfolderBase]: 776/1506 cut-off events. [2024-06-27 23:14:41,386 INFO L125 PetriNetUnfolderBase]: For 241497/241497 co-relation queries the response was YES. [2024-06-27 23:14:41,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 1506 events. 776/1506 cut-off events. For 241497/241497 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9516 event pairs, 124 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 9427. Up to 1304 conditions per place. [2024-06-27 23:14:41,409 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 362 selfloop transitions, 32 changer transitions 0/397 dead transitions. [2024-06-27 23:14:41,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 397 transitions, 4853 flow [2024-06-27 23:14:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:14:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:14:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-27 23:14:41,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36476426799007444 [2024-06-27 23:14:41,415 INFO L175 Difference]: Start difference. First operand has 456 places, 381 transitions, 3639 flow. Second operand 13 states and 147 transitions. [2024-06-27 23:14:41,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 397 transitions, 4853 flow [2024-06-27 23:14:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 397 transitions, 4781 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:14:42,413 INFO L231 Difference]: Finished difference. Result has 458 places, 382 transitions, 3681 flow [2024-06-27 23:14:42,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3567, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3681, PETRI_PLACES=458, PETRI_TRANSITIONS=382} [2024-06-27 23:14:42,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-27 23:14:42,421 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 382 transitions, 3681 flow [2024-06-27 23:14:42,422 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 23:14:42,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:42,422 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 23:14:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:14:42,422 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:42,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1756199181, now seen corresponding path program 21 times [2024-06-27 23:14:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:42,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236574905] [2024-06-27 23:14:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:45,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236574905] [2024-06-27 23:14:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236574905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:45,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:45,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:14:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902689026] [2024-06-27 23:14:45,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:45,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:14:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:14:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:14:45,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:45,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 382 transitions, 3681 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 23:14:45,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:45,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:45,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:46,676 INFO L124 PetriNetUnfolderBase]: 773/1501 cut-off events. [2024-06-27 23:14:46,676 INFO L125 PetriNetUnfolderBase]: For 213826/213826 co-relation queries the response was YES. [2024-06-27 23:14:46,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9270 conditions, 1501 events. 773/1501 cut-off events. For 213826/213826 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9509 event pairs, 125 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 9051. Up to 1350 conditions per place. [2024-06-27 23:14:46,698 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 364 selfloop transitions, 28 changer transitions 0/395 dead transitions. [2024-06-27 23:14:46,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 395 transitions, 4493 flow [2024-06-27 23:14:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:14:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:14:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 23:14:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 23:14:46,699 INFO L175 Difference]: Start difference. First operand has 458 places, 382 transitions, 3681 flow. Second operand 12 states and 140 transitions. [2024-06-27 23:14:46,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 395 transitions, 4493 flow [2024-06-27 23:14:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 395 transitions, 4218 flow, removed 41 selfloop flow, removed 13 redundant places. [2024-06-27 23:14:47,611 INFO L231 Difference]: Finished difference. Result has 457 places, 382 transitions, 3466 flow [2024-06-27 23:14:47,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3466, PETRI_PLACES=457, PETRI_TRANSITIONS=382} [2024-06-27 23:14:47,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-27 23:14:47,612 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 382 transitions, 3466 flow [2024-06-27 23:14:47,612 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 23:14:47,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:47,612 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 23:14:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:14:47,612 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:47,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash 649842814, now seen corresponding path program 16 times [2024-06-27 23:14:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746847600] [2024-06-27 23:14:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:47,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:49,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:49,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746847600] [2024-06-27 23:14:49,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746847600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:49,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:49,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:14:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425115285] [2024-06-27 23:14:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:49,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:14:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:14:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:14:49,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:49,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 382 transitions, 3466 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 23:14:49,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:49,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:49,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:49,823 INFO L124 PetriNetUnfolderBase]: 777/1509 cut-off events. [2024-06-27 23:14:49,823 INFO L125 PetriNetUnfolderBase]: For 215192/215192 co-relation queries the response was YES. [2024-06-27 23:14:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8886 conditions, 1509 events. 777/1509 cut-off events. For 215192/215192 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9607 event pairs, 77 based on Foata normal form. 2/1510 useless extension candidates. Maximal degree in co-relation 8669. Up to 1337 conditions per place. [2024-06-27 23:14:49,845 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 371 selfloop transitions, 30 changer transitions 0/404 dead transitions. [2024-06-27 23:14:49,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 404 transitions, 4362 flow [2024-06-27 23:14:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:14:49,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:14:49,847 INFO L175 Difference]: Start difference. First operand has 457 places, 382 transitions, 3466 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:14:49,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 404 transitions, 4362 flow [2024-06-27 23:14:50,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 404 transitions, 4148 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-27 23:14:50,825 INFO L231 Difference]: Finished difference. Result has 453 places, 383 transitions, 3358 flow [2024-06-27 23:14:50,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3358, PETRI_PLACES=453, PETRI_TRANSITIONS=383} [2024-06-27 23:14:50,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-27 23:14:50,826 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 383 transitions, 3358 flow [2024-06-27 23:14:50,826 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 23:14:50,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:14:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:14:50,826 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:50,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash -99710234, now seen corresponding path program 17 times [2024-06-27 23:14:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902973625] [2024-06-27 23:14:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:52,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902973625] [2024-06-27 23:14:52,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902973625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:52,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:52,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:14:52,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344115179] [2024-06-27 23:14:52,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:52,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:14:52,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:52,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:14:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:14:52,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:52,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 383 transitions, 3358 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 23:14:52,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:52,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:52,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:53,229 INFO L124 PetriNetUnfolderBase]: 784/1522 cut-off events. [2024-06-27 23:14:53,229 INFO L125 PetriNetUnfolderBase]: For 218173/218173 co-relation queries the response was YES. [2024-06-27 23:14:53,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8713 conditions, 1522 events. 784/1522 cut-off events. For 218173/218173 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9676 event pairs, 87 based on Foata normal form. 2/1523 useless extension candidates. Maximal degree in co-relation 8499. Up to 1364 conditions per place. [2024-06-27 23:14:53,250 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 369 selfloop transitions, 32 changer transitions 0/404 dead transitions. [2024-06-27 23:14:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 404 transitions, 4264 flow [2024-06-27 23:14:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:14:53,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:14:53,252 INFO L175 Difference]: Start difference. First operand has 453 places, 383 transitions, 3358 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:14:53,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 404 transitions, 4264 flow [2024-06-27 23:14:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 404 transitions, 4170 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:14:54,154 INFO L231 Difference]: Finished difference. Result has 456 places, 386 transitions, 3399 flow [2024-06-27 23:14:54,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3399, PETRI_PLACES=456, PETRI_TRANSITIONS=386} [2024-06-27 23:14:54,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-27 23:14:54,154 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 386 transitions, 3399 flow [2024-06-27 23:14:54,155 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 23:14:54,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:54,155 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 23:14:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:14:54,155 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:54,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:54,155 INFO L85 PathProgramCache]: Analyzing trace with hash -91526234, now seen corresponding path program 18 times [2024-06-27 23:14:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284109215] [2024-06-27 23:14:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:14:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284109215] [2024-06-27 23:14:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284109215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:55,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:14:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733960763] [2024-06-27 23:14:55,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:55,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:14:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:14:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:14:55,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:14:55,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 386 transitions, 3399 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 23:14:55,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:55,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:14:55,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:56,429 INFO L124 PetriNetUnfolderBase]: 788/1530 cut-off events. [2024-06-27 23:14:56,430 INFO L125 PetriNetUnfolderBase]: For 220719/220719 co-relation queries the response was YES. [2024-06-27 23:14:56,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1530 events. 788/1530 cut-off events. For 220719/220719 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9742 event pairs, 88 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 8559. Up to 1367 conditions per place. [2024-06-27 23:14:56,451 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 372 selfloop transitions, 31 changer transitions 0/406 dead transitions. [2024-06-27 23:14:56,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 406 transitions, 4295 flow [2024-06-27 23:14:56,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:14:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:14:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:14:56,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:14:56,453 INFO L175 Difference]: Start difference. First operand has 456 places, 386 transitions, 3399 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:14:56,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 406 transitions, 4295 flow [2024-06-27 23:14:57,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 406 transitions, 4198 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:14:57,456 INFO L231 Difference]: Finished difference. Result has 459 places, 387 transitions, 3412 flow [2024-06-27 23:14:57,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3412, PETRI_PLACES=459, PETRI_TRANSITIONS=387} [2024-06-27 23:14:57,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-27 23:14:57,457 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 387 transitions, 3412 flow [2024-06-27 23:14:57,457 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 23:14:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:14:57,458 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 23:14:57,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:14:57,458 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:14:57,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:14:57,459 INFO L85 PathProgramCache]: Analyzing trace with hash 3009446, now seen corresponding path program 19 times [2024-06-27 23:14:57,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:14:57,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829208165] [2024-06-27 23:14:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:14:57,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:14:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:14:58,809 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 23:14:58,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:14:58,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829208165] [2024-06-27 23:14:58,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829208165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:14:58,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:14:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:14:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46930073] [2024-06-27 23:14:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:14:58,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:14:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:14:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:14:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:14:58,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:14:58,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 387 transitions, 3412 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 23:14:58,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:14:58,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:14:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:14:59,354 INFO L124 PetriNetUnfolderBase]: 728/1470 cut-off events. [2024-06-27 23:14:59,355 INFO L125 PetriNetUnfolderBase]: For 232643/232646 co-relation queries the response was YES. [2024-06-27 23:14:59,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 1470 events. 728/1470 cut-off events. For 232643/232646 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9696 event pairs, 42 based on Foata normal form. 4/1468 useless extension candidates. Maximal degree in co-relation 8102. Up to 952 conditions per place. [2024-06-27 23:14:59,376 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 37 changer transitions 0/406 dead transitions. [2024-06-27 23:14:59,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 406 transitions, 4036 flow [2024-06-27 23:14:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:14:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:14:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:14:59,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-27 23:14:59,377 INFO L175 Difference]: Start difference. First operand has 459 places, 387 transitions, 3412 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:14:59,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 406 transitions, 4036 flow [2024-06-27 23:15:00,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 406 transitions, 3936 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:00,262 INFO L231 Difference]: Finished difference. Result has 460 places, 388 transitions, 3443 flow [2024-06-27 23:15:00,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3312, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3443, PETRI_PLACES=460, PETRI_TRANSITIONS=388} [2024-06-27 23:15:00,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-27 23:15:00,263 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 388 transitions, 3443 flow [2024-06-27 23:15:00,263 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 23:15:00,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:00,263 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 23:15:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:15:00,263 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:00,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1544271544, now seen corresponding path program 20 times [2024-06-27 23:15:00,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:00,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144636977] [2024-06-27 23:15:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:01,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144636977] [2024-06-27 23:15:01,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144636977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:01,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:01,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:01,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356451280] [2024-06-27 23:15:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:01,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:02,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:02,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 388 transitions, 3443 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 23:15:02,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:02,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:02,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:02,655 INFO L124 PetriNetUnfolderBase]: 796/1546 cut-off events. [2024-06-27 23:15:02,656 INFO L125 PetriNetUnfolderBase]: For 226167/226167 co-relation queries the response was YES. [2024-06-27 23:15:02,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 1546 events. 796/1546 cut-off events. For 226167/226167 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9882 event pairs, 94 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 8701. Up to 1374 conditions per place. [2024-06-27 23:15:02,677 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 378 selfloop transitions, 28 changer transitions 0/409 dead transitions. [2024-06-27 23:15:02,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 409 transitions, 4353 flow [2024-06-27 23:15:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:15:02,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:15:02,679 INFO L175 Difference]: Start difference. First operand has 460 places, 388 transitions, 3443 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:15:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 409 transitions, 4353 flow [2024-06-27 23:15:03,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 409 transitions, 4236 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:03,566 INFO L231 Difference]: Finished difference. Result has 463 places, 389 transitions, 3434 flow [2024-06-27 23:15:03,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3434, PETRI_PLACES=463, PETRI_TRANSITIONS=389} [2024-06-27 23:15:03,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-27 23:15:03,567 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 389 transitions, 3434 flow [2024-06-27 23:15:03,567 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 23:15:03,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:03,567 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 23:15:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:15:03,567 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:03,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1192935146, now seen corresponding path program 21 times [2024-06-27 23:15:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955377815] [2024-06-27 23:15:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:03,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955377815] [2024-06-27 23:15:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955377815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:05,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040629359] [2024-06-27 23:15:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:05,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:05,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 389 transitions, 3434 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 23:15:05,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:05,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:05,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:05,894 INFO L124 PetriNetUnfolderBase]: 800/1554 cut-off events. [2024-06-27 23:15:05,894 INFO L125 PetriNetUnfolderBase]: For 220967/220967 co-relation queries the response was YES. [2024-06-27 23:15:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8883 conditions, 1554 events. 800/1554 cut-off events. For 220967/220967 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9919 event pairs, 98 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 8664. Up to 1391 conditions per place. [2024-06-27 23:15:05,915 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 376 selfloop transitions, 29 changer transitions 0/408 dead transitions. [2024-06-27 23:15:05,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 408 transitions, 4332 flow [2024-06-27 23:15:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:05,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:05,916 INFO L175 Difference]: Start difference. First operand has 463 places, 389 transitions, 3434 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:05,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 408 transitions, 4332 flow [2024-06-27 23:15:06,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 408 transitions, 4240 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:06,882 INFO L231 Difference]: Finished difference. Result has 465 places, 390 transitions, 3448 flow [2024-06-27 23:15:06,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3448, PETRI_PLACES=465, PETRI_TRANSITIONS=390} [2024-06-27 23:15:06,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-27 23:15:06,883 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 390 transitions, 3448 flow [2024-06-27 23:15:06,883 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 23:15:06,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:06,883 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 23:15:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:15:06,884 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:06,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1205595236, now seen corresponding path program 22 times [2024-06-27 23:15:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:06,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218818860] [2024-06-27 23:15:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:06,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218818860] [2024-06-27 23:15:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218818860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455524734] [2024-06-27 23:15:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:09,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:09,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 390 transitions, 3448 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 23:15:09,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:09,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:09,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:10,000 INFO L124 PetriNetUnfolderBase]: 804/1562 cut-off events. [2024-06-27 23:15:10,001 INFO L125 PetriNetUnfolderBase]: For 223874/223874 co-relation queries the response was YES. [2024-06-27 23:15:10,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8934 conditions, 1562 events. 804/1562 cut-off events. For 223874/223874 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10015 event pairs, 103 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 8714. Up to 1404 conditions per place. [2024-06-27 23:15:10,024 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 376 selfloop transitions, 30 changer transitions 0/409 dead transitions. [2024-06-27 23:15:10,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 409 transitions, 4357 flow [2024-06-27 23:15:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:10,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:10,026 INFO L175 Difference]: Start difference. First operand has 465 places, 390 transitions, 3448 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:10,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 409 transitions, 4357 flow [2024-06-27 23:15:11,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 409 transitions, 4261 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:11,047 INFO L231 Difference]: Finished difference. Result has 468 places, 392 transitions, 3476 flow [2024-06-27 23:15:11,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3476, PETRI_PLACES=468, PETRI_TRANSITIONS=392} [2024-06-27 23:15:11,047 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-27 23:15:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 392 transitions, 3476 flow [2024-06-27 23:15:11,048 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 23:15:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:11,048 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 23:15:11,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:15:11,048 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:11,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 97102650, now seen corresponding path program 23 times [2024-06-27 23:15:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:11,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114477285] [2024-06-27 23:15:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:11,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114477285] [2024-06-27 23:15:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114477285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:13,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:13,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963939920] [2024-06-27 23:15:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:13,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:13,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:13,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:13,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:13,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 392 transitions, 3476 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 23:15:13,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:13,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:13,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:13,905 INFO L124 PetriNetUnfolderBase]: 808/1569 cut-off events. [2024-06-27 23:15:13,905 INFO L125 PetriNetUnfolderBase]: For 226516/226516 co-relation queries the response was YES. [2024-06-27 23:15:13,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8991 conditions, 1569 events. 808/1569 cut-off events. For 226516/226516 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10075 event pairs, 103 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 8769. Up to 1403 conditions per place. [2024-06-27 23:15:13,929 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 371 selfloop transitions, 35 changer transitions 0/409 dead transitions. [2024-06-27 23:15:13,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 409 transitions, 4374 flow [2024-06-27 23:15:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:13,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:13,930 INFO L175 Difference]: Start difference. First operand has 468 places, 392 transitions, 3476 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:13,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 409 transitions, 4374 flow [2024-06-27 23:15:14,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 409 transitions, 4273 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:14,893 INFO L231 Difference]: Finished difference. Result has 471 places, 393 transitions, 3497 flow [2024-06-27 23:15:14,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3497, PETRI_PLACES=471, PETRI_TRANSITIONS=393} [2024-06-27 23:15:14,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2024-06-27 23:15:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 393 transitions, 3497 flow [2024-06-27 23:15:14,894 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 23:15:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:14,894 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 23:15:14,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:15:14,895 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:14,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1582468872, now seen corresponding path program 24 times [2024-06-27 23:15:14,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:14,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178325219] [2024-06-27 23:15:14,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:14,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:16,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178325219] [2024-06-27 23:15:16,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178325219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:16,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:16,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:16,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988408817] [2024-06-27 23:15:16,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:16,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:16,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:16,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:16,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 393 transitions, 3497 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 23:15:16,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:16,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:16,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:17,145 INFO L124 PetriNetUnfolderBase]: 812/1577 cut-off events. [2024-06-27 23:15:17,146 INFO L125 PetriNetUnfolderBase]: For 229283/229283 co-relation queries the response was YES. [2024-06-27 23:15:17,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1577 events. 812/1577 cut-off events. For 229283/229283 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10116 event pairs, 102 based on Foata normal form. 2/1578 useless extension candidates. Maximal degree in co-relation 8824. Up to 1406 conditions per place. [2024-06-27 23:15:17,169 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 374 selfloop transitions, 34 changer transitions 0/411 dead transitions. [2024-06-27 23:15:17,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 411 transitions, 4403 flow [2024-06-27 23:15:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:17,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:17,170 INFO L175 Difference]: Start difference. First operand has 471 places, 393 transitions, 3497 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:17,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 411 transitions, 4403 flow [2024-06-27 23:15:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 411 transitions, 4291 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:18,150 INFO L231 Difference]: Finished difference. Result has 473 places, 394 transitions, 3507 flow [2024-06-27 23:15:18,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3507, PETRI_PLACES=473, PETRI_TRANSITIONS=394} [2024-06-27 23:15:18,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-06-27 23:15:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 394 transitions, 3507 flow [2024-06-27 23:15:18,150 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 23:15:18,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:18,151 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 23:15:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:15:18,151 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:18,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash 490343850, now seen corresponding path program 25 times [2024-06-27 23:15:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894119303] [2024-06-27 23:15:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894119303] [2024-06-27 23:15:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894119303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784360640] [2024-06-27 23:15:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:20,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:20,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:20,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:20,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:20,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:20,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 394 transitions, 3507 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 23:15:20,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:20,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:20,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:20,957 INFO L124 PetriNetUnfolderBase]: 816/1585 cut-off events. [2024-06-27 23:15:20,957 INFO L125 PetriNetUnfolderBase]: For 232160/232160 co-relation queries the response was YES. [2024-06-27 23:15:20,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9096 conditions, 1585 events. 816/1585 cut-off events. For 232160/232160 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10184 event pairs, 101 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 8872. Up to 1407 conditions per place. [2024-06-27 23:15:20,980 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 366 selfloop transitions, 42 changer transitions 0/411 dead transitions. [2024-06-27 23:15:20,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 411 transitions, 4413 flow [2024-06-27 23:15:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:15:20,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:15:20,982 INFO L175 Difference]: Start difference. First operand has 473 places, 394 transitions, 3507 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:15:20,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 411 transitions, 4413 flow [2024-06-27 23:15:21,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 411 transitions, 4301 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:21,950 INFO L231 Difference]: Finished difference. Result has 475 places, 395 transitions, 3535 flow [2024-06-27 23:15:21,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3535, PETRI_PLACES=475, PETRI_TRANSITIONS=395} [2024-06-27 23:15:21,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-27 23:15:21,951 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 395 transitions, 3535 flow [2024-06-27 23:15:21,951 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 23:15:21,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:21,951 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 23:15:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:15:21,951 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:21,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:21,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1378269418, now seen corresponding path program 26 times [2024-06-27 23:15:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:21,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546182056] [2024-06-27 23:15:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:21,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:23,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546182056] [2024-06-27 23:15:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546182056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:23,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:23,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482481487] [2024-06-27 23:15:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:23,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:23,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 395 transitions, 3535 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 23:15:23,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:23,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:23,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:24,508 INFO L124 PetriNetUnfolderBase]: 820/1593 cut-off events. [2024-06-27 23:15:24,509 INFO L125 PetriNetUnfolderBase]: For 234821/234821 co-relation queries the response was YES. [2024-06-27 23:15:24,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 1593 events. 820/1593 cut-off events. For 234821/234821 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10251 event pairs, 81 based on Foata normal form. 2/1594 useless extension candidates. Maximal degree in co-relation 8936. Up to 1436 conditions per place. [2024-06-27 23:15:24,532 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 381 selfloop transitions, 29 changer transitions 0/413 dead transitions. [2024-06-27 23:15:24,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 413 transitions, 4456 flow [2024-06-27 23:15:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:24,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:24,533 INFO L175 Difference]: Start difference. First operand has 475 places, 395 transitions, 3535 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:24,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 413 transitions, 4456 flow [2024-06-27 23:15:25,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 413 transitions, 4326 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:25,515 INFO L231 Difference]: Finished difference. Result has 478 places, 397 transitions, 3533 flow [2024-06-27 23:15:25,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3533, PETRI_PLACES=478, PETRI_TRANSITIONS=397} [2024-06-27 23:15:25,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2024-06-27 23:15:25,516 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 397 transitions, 3533 flow [2024-06-27 23:15:25,516 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 23:15:25,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:25,516 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 23:15:25,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:15:25,517 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:25,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1378121548, now seen corresponding path program 27 times [2024-06-27 23:15:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21490023] [2024-06-27 23:15:25,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:27,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21490023] [2024-06-27 23:15:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21490023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:27,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391147780] [2024-06-27 23:15:27,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:27,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:27,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:27,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:27,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 397 transitions, 3533 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 23:15:27,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:27,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:27,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:27,933 INFO L124 PetriNetUnfolderBase]: 824/1601 cut-off events. [2024-06-27 23:15:27,933 INFO L125 PetriNetUnfolderBase]: For 237421/237421 co-relation queries the response was YES. [2024-06-27 23:15:27,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9190 conditions, 1601 events. 824/1601 cut-off events. For 237421/237421 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10325 event pairs, 81 based on Foata normal form. 2/1602 useless extension candidates. Maximal degree in co-relation 8963. Up to 1439 conditions per place. [2024-06-27 23:15:27,957 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 384 selfloop transitions, 28 changer transitions 0/415 dead transitions. [2024-06-27 23:15:27,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 415 transitions, 4455 flow [2024-06-27 23:15:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:27,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:27,958 INFO L175 Difference]: Start difference. First operand has 478 places, 397 transitions, 3533 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:27,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 415 transitions, 4455 flow [2024-06-27 23:15:28,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 415 transitions, 4352 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:28,915 INFO L231 Difference]: Finished difference. Result has 481 places, 398 transitions, 3546 flow [2024-06-27 23:15:28,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3546, PETRI_PLACES=481, PETRI_TRANSITIONS=398} [2024-06-27 23:15:28,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 451 predicate places. [2024-06-27 23:15:28,916 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 398 transitions, 3546 flow [2024-06-27 23:15:28,916 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 23:15:28,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:28,916 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 23:15:28,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:15:28,917 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:28,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:28,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1289555788, now seen corresponding path program 28 times [2024-06-27 23:15:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:28,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977875699] [2024-06-27 23:15:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977875699] [2024-06-27 23:15:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977875699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:30,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:30,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704726980] [2024-06-27 23:15:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:30,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:30,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 398 transitions, 3546 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 23:15:30,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:30,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:31,311 INFO L124 PetriNetUnfolderBase]: 828/1609 cut-off events. [2024-06-27 23:15:31,311 INFO L125 PetriNetUnfolderBase]: For 240421/240421 co-relation queries the response was YES. [2024-06-27 23:15:31,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9241 conditions, 1609 events. 828/1609 cut-off events. For 240421/240421 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 10377 event pairs, 79 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 9013. Up to 1438 conditions per place. [2024-06-27 23:15:31,335 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 388 selfloop transitions, 27 changer transitions 0/418 dead transitions. [2024-06-27 23:15:31,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 418 transitions, 4482 flow [2024-06-27 23:15:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:15:31,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:15:31,337 INFO L175 Difference]: Start difference. First operand has 481 places, 398 transitions, 3546 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:15:31,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 418 transitions, 4482 flow [2024-06-27 23:15:32,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 418 transitions, 4376 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:32,394 INFO L231 Difference]: Finished difference. Result has 483 places, 399 transitions, 3556 flow [2024-06-27 23:15:32,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3556, PETRI_PLACES=483, PETRI_TRANSITIONS=399} [2024-06-27 23:15:32,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2024-06-27 23:15:32,394 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 399 transitions, 3556 flow [2024-06-27 23:15:32,395 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 23:15:32,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:32,395 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 23:15:32,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:15:32,395 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:32,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash 662690772, now seen corresponding path program 29 times [2024-06-27 23:15:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525816205] [2024-06-27 23:15:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:34,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525816205] [2024-06-27 23:15:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525816205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:34,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:34,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790976187] [2024-06-27 23:15:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:34,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 399 transitions, 3556 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 23:15:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:35,130 INFO L124 PetriNetUnfolderBase]: 832/1617 cut-off events. [2024-06-27 23:15:35,131 INFO L125 PetriNetUnfolderBase]: For 243553/243553 co-relation queries the response was YES. [2024-06-27 23:15:35,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9292 conditions, 1617 events. 832/1617 cut-off events. For 243553/243553 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10423 event pairs, 83 based on Foata normal form. 2/1618 useless extension candidates. Maximal degree in co-relation 9063. Up to 1445 conditions per place. [2024-06-27 23:15:35,154 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 376 selfloop transitions, 36 changer transitions 0/415 dead transitions. [2024-06-27 23:15:35,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 415 transitions, 4476 flow [2024-06-27 23:15:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:15:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:15:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:15:35,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:15:35,156 INFO L175 Difference]: Start difference. First operand has 483 places, 399 transitions, 3556 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:15:35,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 415 transitions, 4476 flow [2024-06-27 23:15:36,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 415 transitions, 4370 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:36,168 INFO L231 Difference]: Finished difference. Result has 484 places, 400 transitions, 3586 flow [2024-06-27 23:15:36,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=484, PETRI_TRANSITIONS=400} [2024-06-27 23:15:36,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-27 23:15:36,169 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 400 transitions, 3586 flow [2024-06-27 23:15:36,169 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 23:15:36,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:36,169 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 23:15:36,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:15:36,169 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:36,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash 985245600, now seen corresponding path program 30 times [2024-06-27 23:15:36,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:36,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115433519] [2024-06-27 23:15:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:36,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115433519] [2024-06-27 23:15:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115433519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:38,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:38,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:38,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239882993] [2024-06-27 23:15:38,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:38,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:38,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:38,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 400 transitions, 3586 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 23:15:38,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:38,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:38,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:39,381 INFO L124 PetriNetUnfolderBase]: 836/1625 cut-off events. [2024-06-27 23:15:39,381 INFO L125 PetriNetUnfolderBase]: For 246355/246355 co-relation queries the response was YES. [2024-06-27 23:15:39,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1625 events. 836/1625 cut-off events. For 246355/246355 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10520 event pairs, 85 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 9128. Up to 1462 conditions per place. [2024-06-27 23:15:39,406 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 381 selfloop transitions, 32 changer transitions 0/416 dead transitions. [2024-06-27 23:15:39,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 416 transitions, 4510 flow [2024-06-27 23:15:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:15:39,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-27 23:15:39,407 INFO L175 Difference]: Start difference. First operand has 484 places, 400 transitions, 3586 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:15:39,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 416 transitions, 4510 flow [2024-06-27 23:15:40,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 416 transitions, 4384 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:40,482 INFO L231 Difference]: Finished difference. Result has 487 places, 401 transitions, 3590 flow [2024-06-27 23:15:40,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3590, PETRI_PLACES=487, PETRI_TRANSITIONS=401} [2024-06-27 23:15:40,482 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 457 predicate places. [2024-06-27 23:15:40,482 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 401 transitions, 3590 flow [2024-06-27 23:15:40,482 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 23:15:40,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:40,482 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 23:15:40,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:15:40,483 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:40,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 657180522, now seen corresponding path program 31 times [2024-06-27 23:15:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290137705] [2024-06-27 23:15:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:42,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:42,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290137705] [2024-06-27 23:15:42,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290137705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:42,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:42,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:42,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694967610] [2024-06-27 23:15:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:42,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:42,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:42,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:42,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:42,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:42,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 401 transitions, 3590 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 23:15:42,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:42,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:42,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:43,078 INFO L124 PetriNetUnfolderBase]: 840/1633 cut-off events. [2024-06-27 23:15:43,078 INFO L125 PetriNetUnfolderBase]: For 249287/249287 co-relation queries the response was YES. [2024-06-27 23:15:43,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 1633 events. 840/1633 cut-off events. For 249287/249287 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 10596 event pairs, 83 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 9166. Up to 1465 conditions per place. [2024-06-27 23:15:43,104 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 385 selfloop transitions, 30 changer transitions 0/418 dead transitions. [2024-06-27 23:15:43,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 418 transitions, 4522 flow [2024-06-27 23:15:43,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:15:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:15:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:15:43,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-27 23:15:43,105 INFO L175 Difference]: Start difference. First operand has 487 places, 401 transitions, 3590 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:15:43,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 418 transitions, 4522 flow [2024-06-27 23:15:44,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 418 transitions, 4402 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:44,128 INFO L231 Difference]: Finished difference. Result has 488 places, 402 transitions, 3598 flow [2024-06-27 23:15:44,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3598, PETRI_PLACES=488, PETRI_TRANSITIONS=402} [2024-06-27 23:15:44,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2024-06-27 23:15:44,129 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 402 transitions, 3598 flow [2024-06-27 23:15:44,129 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 23:15:44,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:44,129 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 23:15:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:15:44,130 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:44,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2042971424, now seen corresponding path program 32 times [2024-06-27 23:15:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132886889] [2024-06-27 23:15:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:46,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132886889] [2024-06-27 23:15:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132886889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427114136] [2024-06-27 23:15:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:46,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:46,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 402 transitions, 3598 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 23:15:46,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:46,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:46,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:47,182 INFO L124 PetriNetUnfolderBase]: 844/1641 cut-off events. [2024-06-27 23:15:47,182 INFO L125 PetriNetUnfolderBase]: For 252410/252410 co-relation queries the response was YES. [2024-06-27 23:15:47,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9445 conditions, 1641 events. 844/1641 cut-off events. For 252410/252410 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10624 event pairs, 89 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 9214. Up to 1415 conditions per place. [2024-06-27 23:15:47,201 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 349 selfloop transitions, 65 changer transitions 0/417 dead transitions. [2024-06-27 23:15:47,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 417 transitions, 4524 flow [2024-06-27 23:15:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:15:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:15:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:15:47,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-27 23:15:47,203 INFO L175 Difference]: Start difference. First operand has 488 places, 402 transitions, 3598 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:15:47,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 417 transitions, 4524 flow [2024-06-27 23:15:48,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 417 transitions, 4406 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:48,238 INFO L231 Difference]: Finished difference. Result has 490 places, 403 transitions, 3680 flow [2024-06-27 23:15:48,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3680, PETRI_PLACES=490, PETRI_TRANSITIONS=403} [2024-06-27 23:15:48,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 460 predicate places. [2024-06-27 23:15:48,238 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 403 transitions, 3680 flow [2024-06-27 23:15:48,238 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 23:15:48,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:48,239 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 23:15:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:15:48,239 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:48,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1849032014, now seen corresponding path program 33 times [2024-06-27 23:15:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204211408] [2024-06-27 23:15:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:50,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:50,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204211408] [2024-06-27 23:15:50,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204211408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:50,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:50,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:50,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639895413] [2024-06-27 23:15:50,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:50,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:50,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:50,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:50,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 403 transitions, 3680 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 23:15:50,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:50,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:50,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:51,086 INFO L124 PetriNetUnfolderBase]: 848/1649 cut-off events. [2024-06-27 23:15:51,087 INFO L125 PetriNetUnfolderBase]: For 255599/255599 co-relation queries the response was YES. [2024-06-27 23:15:51,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9563 conditions, 1649 events. 848/1649 cut-off events. For 255599/255599 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10693 event pairs, 89 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 9331. Up to 1459 conditions per place. [2024-06-27 23:15:51,114 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 369 selfloop transitions, 46 changer transitions 0/418 dead transitions. [2024-06-27 23:15:51,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 418 transitions, 4610 flow [2024-06-27 23:15:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:15:51,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:15:51,115 INFO L175 Difference]: Start difference. First operand has 490 places, 403 transitions, 3680 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:15:51,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 418 transitions, 4610 flow [2024-06-27 23:15:52,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 418 transitions, 4420 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:52,116 INFO L231 Difference]: Finished difference. Result has 493 places, 404 transitions, 3654 flow [2024-06-27 23:15:52,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3654, PETRI_PLACES=493, PETRI_TRANSITIONS=404} [2024-06-27 23:15:52,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2024-06-27 23:15:52,116 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 404 transitions, 3654 flow [2024-06-27 23:15:52,116 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 23:15:52,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:52,117 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 23:15:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:15:52,117 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:52,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1843669634, now seen corresponding path program 34 times [2024-06-27 23:15:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162898952] [2024-06-27 23:15:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:54,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162898952] [2024-06-27 23:15:54,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162898952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:54,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:54,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:15:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165191509] [2024-06-27 23:15:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:54,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:15:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:15:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:15:54,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:54,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 404 transitions, 3654 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 23:15:54,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:54,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:54,830 INFO L124 PetriNetUnfolderBase]: 852/1657 cut-off events. [2024-06-27 23:15:54,830 INFO L125 PetriNetUnfolderBase]: For 258331/258331 co-relation queries the response was YES. [2024-06-27 23:15:54,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9573 conditions, 1657 events. 852/1657 cut-off events. For 258331/258331 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10737 event pairs, 91 based on Foata normal form. 2/1658 useless extension candidates. Maximal degree in co-relation 9339. Up to 1473 conditions per place. [2024-06-27 23:15:54,856 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 374 selfloop transitions, 42 changer transitions 0/419 dead transitions. [2024-06-27 23:15:54,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 419 transitions, 4588 flow [2024-06-27 23:15:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:15:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:15:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:15:54,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-27 23:15:54,857 INFO L175 Difference]: Start difference. First operand has 493 places, 404 transitions, 3654 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:15:54,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 419 transitions, 4588 flow [2024-06-27 23:15:55,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 419 transitions, 4434 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 23:15:55,944 INFO L231 Difference]: Finished difference. Result has 494 places, 405 transitions, 3658 flow [2024-06-27 23:15:55,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3658, PETRI_PLACES=494, PETRI_TRANSITIONS=405} [2024-06-27 23:15:55,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-06-27 23:15:55,945 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 405 transitions, 3658 flow [2024-06-27 23:15:55,946 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 23:15:55,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:55,946 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 23:15:55,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:15:55,946 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:55,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1843521764, now seen corresponding path program 35 times [2024-06-27 23:15:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572294788] [2024-06-27 23:15:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:15:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:15:57,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:15:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572294788] [2024-06-27 23:15:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572294788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:15:57,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:15:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:15:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054573086] [2024-06-27 23:15:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:15:57,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:15:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:15:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:15:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:15:57,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:15:57,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 405 transitions, 3658 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 23:15:57,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:15:57,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:15:57,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:15:58,509 INFO L124 PetriNetUnfolderBase]: 849/1652 cut-off events. [2024-06-27 23:15:58,510 INFO L125 PetriNetUnfolderBase]: For 222189/222189 co-relation queries the response was YES. [2024-06-27 23:15:58,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9001 conditions, 1652 events. 849/1652 cut-off events. For 222189/222189 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10727 event pairs, 88 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 8767. Up to 1463 conditions per place. [2024-06-27 23:15:58,535 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 375 selfloop transitions, 42 changer transitions 0/420 dead transitions. [2024-06-27 23:15:58,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 420 transitions, 4528 flow [2024-06-27 23:15:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:15:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:15:58,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:15:58,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 23:15:58,537 INFO L175 Difference]: Start difference. First operand has 494 places, 405 transitions, 3658 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:15:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 420 transitions, 4528 flow [2024-06-27 23:15:59,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 420 transitions, 4380 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 23:15:59,724 INFO L231 Difference]: Finished difference. Result has 497 places, 405 transitions, 3598 flow [2024-06-27 23:15:59,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3598, PETRI_PLACES=497, PETRI_TRANSITIONS=405} [2024-06-27 23:15:59,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2024-06-27 23:15:59,726 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 405 transitions, 3598 flow [2024-06-27 23:15:59,726 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 23:15:59,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:15:59,726 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 23:15:59,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:15:59,726 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:15:59,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:15:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1071594710, now seen corresponding path program 1 times [2024-06-27 23:15:59,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:15:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288741076] [2024-06-27 23:15:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:15:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:15:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:03,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288741076] [2024-06-27 23:16:03,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288741076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:03,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:03,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:16:03,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239086451] [2024-06-27 23:16:03,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:03,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:16:03,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:16:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:16:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 405 transitions, 3598 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 23:16:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:03,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:03,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:04,664 INFO L124 PetriNetUnfolderBase]: 860/1674 cut-off events. [2024-06-27 23:16:04,664 INFO L125 PetriNetUnfolderBase]: For 264186/264186 co-relation queries the response was YES. [2024-06-27 23:16:04,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9536 conditions, 1674 events. 860/1674 cut-off events. For 264186/264186 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 10913 event pairs, 109 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 9300. Up to 1442 conditions per place. [2024-06-27 23:16:04,690 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 378 selfloop transitions, 45 changer transitions 1/427 dead transitions. [2024-06-27 23:16:04,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 427 transitions, 4979 flow [2024-06-27 23:16:04,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:16:04,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-27 23:16:04,692 INFO L175 Difference]: Start difference. First operand has 497 places, 405 transitions, 3598 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:16:04,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 427 transitions, 4979 flow [2024-06-27 23:16:05,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 427 transitions, 4724 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:05,961 INFO L231 Difference]: Finished difference. Result has 499 places, 407 transitions, 3545 flow [2024-06-27 23:16:05,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3545, PETRI_PLACES=499, PETRI_TRANSITIONS=407} [2024-06-27 23:16:05,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 469 predicate places. [2024-06-27 23:16:05,962 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 407 transitions, 3545 flow [2024-06-27 23:16:05,962 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 23:16:05,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:05,962 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 23:16:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:16:05,963 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:05,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -399388338, now seen corresponding path program 2 times [2024-06-27 23:16:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:05,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853332068] [2024-06-27 23:16:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:07,979 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 23:16:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853332068] [2024-06-27 23:16:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853332068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:16:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318260388] [2024-06-27 23:16:07,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:07,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:16:07,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:16:07,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:16:08,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:08,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 407 transitions, 3545 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 23:16:08,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:08,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:08,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:08,850 INFO L124 PetriNetUnfolderBase]: 846/1644 cut-off events. [2024-06-27 23:16:08,850 INFO L125 PetriNetUnfolderBase]: For 224170/224170 co-relation queries the response was YES. [2024-06-27 23:16:08,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 1644 events. 846/1644 cut-off events. For 224170/224170 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10683 event pairs, 112 based on Foata normal form. 2/1645 useless extension candidates. Maximal degree in co-relation 8570. Up to 1459 conditions per place. [2024-06-27 23:16:08,875 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 377 selfloop transitions, 44 changer transitions 0/424 dead transitions. [2024-06-27 23:16:08,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 424 transitions, 4429 flow [2024-06-27 23:16:08,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:16:08,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:16:08,877 INFO L175 Difference]: Start difference. First operand has 499 places, 407 transitions, 3545 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:16:08,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 424 transitions, 4429 flow [2024-06-27 23:16:09,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 424 transitions, 4287 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 23:16:09,911 INFO L231 Difference]: Finished difference. Result has 504 places, 407 transitions, 3495 flow [2024-06-27 23:16:09,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3495, PETRI_PLACES=504, PETRI_TRANSITIONS=407} [2024-06-27 23:16:09,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 474 predicate places. [2024-06-27 23:16:09,912 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 407 transitions, 3495 flow [2024-06-27 23:16:09,912 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 23:16:09,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:09,912 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 23:16:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:16:09,913 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1067010740, now seen corresponding path program 3 times [2024-06-27 23:16:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84274674] [2024-06-27 23:16:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:11,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:11,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84274674] [2024-06-27 23:16:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84274674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:11,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:16:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295269128] [2024-06-27 23:16:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:11,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:16:11,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:16:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:16:11,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:16:11,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 407 transitions, 3495 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 23:16:11,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:11,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:16:11,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:12,588 INFO L124 PetriNetUnfolderBase]: 850/1652 cut-off events. [2024-06-27 23:16:12,588 INFO L125 PetriNetUnfolderBase]: For 228175/228175 co-relation queries the response was YES. [2024-06-27 23:16:12,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 1652 events. 850/1652 cut-off events. For 228175/228175 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 10753 event pairs, 85 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 8568. Up to 1481 conditions per place. [2024-06-27 23:16:12,615 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 392 selfloop transitions, 29 changer transitions 0/424 dead transitions. [2024-06-27 23:16:12,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 424 transitions, 4425 flow [2024-06-27 23:16:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:16:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:16:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 23:16:12,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 23:16:12,617 INFO L175 Difference]: Start difference. First operand has 504 places, 407 transitions, 3495 flow. Second operand 12 states and 141 transitions. [2024-06-27 23:16:12,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 424 transitions, 4425 flow [2024-06-27 23:16:13,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 424 transitions, 4325 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:13,556 INFO L231 Difference]: Finished difference. Result has 506 places, 408 transitions, 3507 flow [2024-06-27 23:16:13,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3507, PETRI_PLACES=506, PETRI_TRANSITIONS=408} [2024-06-27 23:16:13,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 476 predicate places. [2024-06-27 23:16:13,557 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 408 transitions, 3507 flow [2024-06-27 23:16:13,557 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 23:16:13,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:13,557 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 23:16:13,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:16:13,557 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:13,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1274950586, now seen corresponding path program 4 times [2024-06-27 23:16:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:13,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574236146] [2024-06-27 23:16:13,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:13,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574236146] [2024-06-27 23:16:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574236146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:15,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:16:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928270083] [2024-06-27 23:16:15,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:16:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:16:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:16:15,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:15,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 408 transitions, 3507 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 23:16:15,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:15,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:15,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:16,289 INFO L124 PetriNetUnfolderBase]: 862/1680 cut-off events. [2024-06-27 23:16:16,290 INFO L125 PetriNetUnfolderBase]: For 342785/342785 co-relation queries the response was YES. [2024-06-27 23:16:16,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8956 conditions, 1680 events. 862/1680 cut-off events. For 342785/342785 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 10899 event pairs, 84 based on Foata normal form. 8/1687 useless extension candidates. Maximal degree in co-relation 8715. Up to 1351 conditions per place. [2024-06-27 23:16:16,316 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 373 selfloop transitions, 21 changer transitions 34/431 dead transitions. [2024-06-27 23:16:16,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 431 transitions, 4473 flow [2024-06-27 23:16:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:16:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:16:16,318 INFO L175 Difference]: Start difference. First operand has 506 places, 408 transitions, 3507 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:16:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 431 transitions, 4473 flow [2024-06-27 23:16:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 431 transitions, 4371 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:16:17,493 INFO L231 Difference]: Finished difference. Result has 507 places, 387 transitions, 3264 flow [2024-06-27 23:16:17,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3264, PETRI_PLACES=507, PETRI_TRANSITIONS=387} [2024-06-27 23:16:17,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 477 predicate places. [2024-06-27 23:16:17,494 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 387 transitions, 3264 flow [2024-06-27 23:16:17,494 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 23:16:17,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:17,494 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 23:16:17,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:16:17,495 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:17,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash 197259384, now seen corresponding path program 5 times [2024-06-27 23:16:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425448177] [2024-06-27 23:16:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:17,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:19,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425448177] [2024-06-27 23:16:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425448177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:19,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:16:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941600503] [2024-06-27 23:16:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:19,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:16:19,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:16:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:16:19,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:19,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 387 transitions, 3264 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 23:16:19,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:19,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:20,382 INFO L124 PetriNetUnfolderBase]: 810/1585 cut-off events. [2024-06-27 23:16:20,382 INFO L125 PetriNetUnfolderBase]: For 533579/533579 co-relation queries the response was YES. [2024-06-27 23:16:20,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10583 conditions, 1585 events. 810/1585 cut-off events. For 533579/533579 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10120 event pairs, 92 based on Foata normal form. 8/1592 useless extension candidates. Maximal degree in co-relation 10355. Up to 1266 conditions per place. [2024-06-27 23:16:20,408 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 356 selfloop transitions, 39 changer transitions 11/409 dead transitions. [2024-06-27 23:16:20,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 409 transitions, 4652 flow [2024-06-27 23:16:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:16:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483870967741935 [2024-06-27 23:16:20,409 INFO L175 Difference]: Start difference. First operand has 507 places, 387 transitions, 3264 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:16:20,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 409 transitions, 4652 flow [2024-06-27 23:16:22,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 409 transitions, 4439 flow, removed 20 selfloop flow, removed 25 redundant places. [2024-06-27 23:16:22,094 INFO L231 Difference]: Finished difference. Result has 475 places, 381 transitions, 3112 flow [2024-06-27 23:16:22,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3112, PETRI_PLACES=475, PETRI_TRANSITIONS=381} [2024-06-27 23:16:22,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-27 23:16:22,095 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 381 transitions, 3112 flow [2024-06-27 23:16:22,095 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 23:16:22,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:22,095 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 23:16:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:16:22,095 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:22,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 197437014, now seen corresponding path program 6 times [2024-06-27 23:16:22,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944906850] [2024-06-27 23:16:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:24,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944906850] [2024-06-27 23:16:24,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944906850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:24,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:24,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:16:24,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426241629] [2024-06-27 23:16:24,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:24,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:16:24,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:16:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:16:24,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:24,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 381 transitions, 3112 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 23:16:24,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:24,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:24,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:25,064 INFO L124 PetriNetUnfolderBase]: 767/1504 cut-off events. [2024-06-27 23:16:25,064 INFO L125 PetriNetUnfolderBase]: For 360779/360779 co-relation queries the response was YES. [2024-06-27 23:16:25,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 1504 events. 767/1504 cut-off events. For 360779/360779 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9570 event pairs, 79 based on Foata normal form. 10/1513 useless extension candidates. Maximal degree in co-relation 7708. Up to 1266 conditions per place. [2024-06-27 23:16:25,085 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 344 selfloop transitions, 33 changer transitions 18/398 dead transitions. [2024-06-27 23:16:25,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 398 transitions, 4014 flow [2024-06-27 23:16:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:16:25,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-27 23:16:25,086 INFO L175 Difference]: Start difference. First operand has 475 places, 381 transitions, 3112 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:16:25,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 398 transitions, 4014 flow [2024-06-27 23:16:25,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 398 transitions, 3931 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:16:25,928 INFO L231 Difference]: Finished difference. Result has 470 places, 371 transitions, 3031 flow [2024-06-27 23:16:25,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3031, PETRI_PLACES=470, PETRI_TRANSITIONS=371} [2024-06-27 23:16:25,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 440 predicate places. [2024-06-27 23:16:25,928 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 371 transitions, 3031 flow [2024-06-27 23:16:25,929 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 23:16:25,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:25,929 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 23:16:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:16:25,929 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:25,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 192675414, now seen corresponding path program 7 times [2024-06-27 23:16:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:25,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843685305] [2024-06-27 23:16:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843685305] [2024-06-27 23:16:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843685305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:16:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452827537] [2024-06-27 23:16:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:28,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:16:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:28,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:16:28,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:16:28,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:28,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 371 transitions, 3031 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 23:16:28,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:28,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:28,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:28,646 INFO L124 PetriNetUnfolderBase]: 740/1451 cut-off events. [2024-06-27 23:16:28,646 INFO L125 PetriNetUnfolderBase]: For 211961/211961 co-relation queries the response was YES. [2024-06-27 23:16:28,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7666 conditions, 1451 events. 740/1451 cut-off events. For 211961/211961 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9170 event pairs, 64 based on Foata normal form. 2/1452 useless extension candidates. Maximal degree in co-relation 7454. Up to 1216 conditions per place. [2024-06-27 23:16:28,666 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 343 selfloop transitions, 41 changer transitions 0/387 dead transitions. [2024-06-27 23:16:28,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 387 transitions, 3883 flow [2024-06-27 23:16:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:16:28,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-27 23:16:28,668 INFO L175 Difference]: Start difference. First operand has 470 places, 371 transitions, 3031 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:16:28,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 387 transitions, 3883 flow [2024-06-27 23:16:29,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 387 transitions, 3805 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:16:29,364 INFO L231 Difference]: Finished difference. Result has 460 places, 372 transitions, 3093 flow [2024-06-27 23:16:29,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=460, PETRI_TRANSITIONS=372} [2024-06-27 23:16:29,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-27 23:16:29,365 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 372 transitions, 3093 flow [2024-06-27 23:16:29,365 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 23:16:29,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:29,365 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 23:16:29,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:16:29,365 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:29,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 369926904, now seen corresponding path program 8 times [2024-06-27 23:16:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814909074] [2024-06-27 23:16:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:29,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:32,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814909074] [2024-06-27 23:16:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814909074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:32,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:32,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:16:32,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637225666] [2024-06-27 23:16:32,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:32,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:16:32,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:32,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:16:32,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:16:32,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:32,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 372 transitions, 3093 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 23:16:32,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:32,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:32,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:33,123 INFO L124 PetriNetUnfolderBase]: 756/1487 cut-off events. [2024-06-27 23:16:33,124 INFO L125 PetriNetUnfolderBase]: For 332595/332595 co-relation queries the response was YES. [2024-06-27 23:16:33,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7874 conditions, 1487 events. 756/1487 cut-off events. For 332595/332595 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9431 event pairs, 75 based on Foata normal form. 10/1496 useless extension candidates. Maximal degree in co-relation 7667. Up to 1204 conditions per place. [2024-06-27 23:16:33,145 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 321 selfloop transitions, 59 changer transitions 6/389 dead transitions. [2024-06-27 23:16:33,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 389 transitions, 3979 flow [2024-06-27 23:16:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:16:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:16:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:16:33,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-27 23:16:33,146 INFO L175 Difference]: Start difference. First operand has 460 places, 372 transitions, 3093 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:16:33,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 389 transitions, 3979 flow [2024-06-27 23:16:33,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 389 transitions, 3853 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:33,884 INFO L231 Difference]: Finished difference. Result has 462 places, 370 transitions, 3123 flow [2024-06-27 23:16:33,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=462, PETRI_TRANSITIONS=370} [2024-06-27 23:16:33,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-27 23:16:33,885 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 370 transitions, 3123 flow [2024-06-27 23:16:33,885 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 23:16:33,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:33,885 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 23:16:33,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:16:33,885 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:33,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1474931336, now seen corresponding path program 9 times [2024-06-27 23:16:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:33,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293106341] [2024-06-27 23:16:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:36,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:36,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293106341] [2024-06-27 23:16:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293106341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:16:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058809294] [2024-06-27 23:16:36,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:36,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:16:36,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:16:36,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:16:36,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:16:36,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 370 transitions, 3123 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 23:16:36,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:36,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:16:36,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:37,134 INFO L124 PetriNetUnfolderBase]: 743/1454 cut-off events. [2024-06-27 23:16:37,134 INFO L125 PetriNetUnfolderBase]: For 204937/204937 co-relation queries the response was YES. [2024-06-27 23:16:37,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 1454 events. 743/1454 cut-off events. For 204937/204937 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9229 event pairs, 71 based on Foata normal form. 2/1455 useless extension candidates. Maximal degree in co-relation 7600. Up to 1212 conditions per place. [2024-06-27 23:16:37,151 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 325 selfloop transitions, 55 changer transitions 0/384 dead transitions. [2024-06-27 23:16:37,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 384 transitions, 3967 flow [2024-06-27 23:16:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:37,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:16:37,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-27 23:16:37,154 INFO L175 Difference]: Start difference. First operand has 462 places, 370 transitions, 3123 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:16:37,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 384 transitions, 3967 flow [2024-06-27 23:16:37,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 384 transitions, 3801 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:16:37,872 INFO L231 Difference]: Finished difference. Result has 463 places, 371 transitions, 3127 flow [2024-06-27 23:16:37,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3127, PETRI_PLACES=463, PETRI_TRANSITIONS=371} [2024-06-27 23:16:37,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-27 23:16:37,873 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 371 transitions, 3127 flow [2024-06-27 23:16:37,873 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 23:16:37,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:37,873 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 23:16:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:16:37,873 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:37,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1107667514, now seen corresponding path program 10 times [2024-06-27 23:16:37,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:37,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019752813] [2024-06-27 23:16:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:40,164 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 23:16:40,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019752813] [2024-06-27 23:16:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019752813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:16:40,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683763569] [2024-06-27 23:16:40,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:40,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:16:40,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:16:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:16:40,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:40,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 371 transitions, 3127 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:40,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:40,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:40,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:40,896 INFO L124 PetriNetUnfolderBase]: 747/1466 cut-off events. [2024-06-27 23:16:40,897 INFO L125 PetriNetUnfolderBase]: For 207337/207337 co-relation queries the response was YES. [2024-06-27 23:16:40,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 1466 events. 747/1466 cut-off events. For 207337/207337 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9284 event pairs, 70 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 7644. Up to 1180 conditions per place. [2024-06-27 23:16:40,918 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 326 selfloop transitions, 57 changer transitions 0/386 dead transitions. [2024-06-27 23:16:40,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 386 transitions, 3981 flow [2024-06-27 23:16:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:16:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:16:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:16:40,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-27 23:16:40,920 INFO L175 Difference]: Start difference. First operand has 463 places, 371 transitions, 3127 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:16:40,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 386 transitions, 3981 flow [2024-06-27 23:16:41,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 386 transitions, 3821 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:16:41,668 INFO L231 Difference]: Finished difference. Result has 465 places, 372 transitions, 3145 flow [2024-06-27 23:16:41,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3145, PETRI_PLACES=465, PETRI_TRANSITIONS=372} [2024-06-27 23:16:41,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-27 23:16:41,669 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 372 transitions, 3145 flow [2024-06-27 23:16:41,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:41,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:41,669 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 23:16:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:16:41,670 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:41,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1100987820, now seen corresponding path program 1 times [2024-06-27 23:16:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925294999] [2024-06-27 23:16:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925294999] [2024-06-27 23:16:44,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925294999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:44,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:44,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:16:44,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023572555] [2024-06-27 23:16:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:16:44,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:16:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:16:44,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:44,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 372 transitions, 3145 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:44,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:44,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:45,107 INFO L124 PetriNetUnfolderBase]: 777/1532 cut-off events. [2024-06-27 23:16:45,107 INFO L125 PetriNetUnfolderBase]: For 411527/411527 co-relation queries the response was YES. [2024-06-27 23:16:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 1532 events. 777/1532 cut-off events. For 411527/411527 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9801 event pairs, 83 based on Foata normal form. 6/1537 useless extension candidates. Maximal degree in co-relation 9302. Up to 1208 conditions per place. [2024-06-27 23:16:45,124 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 326 selfloop transitions, 57 changer transitions 7/393 dead transitions. [2024-06-27 23:16:45,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 393 transitions, 4385 flow [2024-06-27 23:16:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:16:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:16:45,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 23:16:45,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-27 23:16:45,125 INFO L175 Difference]: Start difference. First operand has 465 places, 372 transitions, 3145 flow. Second operand 12 states and 156 transitions. [2024-06-27 23:16:45,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 393 transitions, 4385 flow [2024-06-27 23:16:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 393 transitions, 4221 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:16:46,268 INFO L231 Difference]: Finished difference. Result has 469 places, 369 transitions, 3073 flow [2024-06-27 23:16:46,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3073, PETRI_PLACES=469, PETRI_TRANSITIONS=369} [2024-06-27 23:16:46,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-27 23:16:46,268 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 369 transitions, 3073 flow [2024-06-27 23:16:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:46,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:46,269 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 23:16:46,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:16:46,269 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:46,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:46,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1101226830, now seen corresponding path program 2 times [2024-06-27 23:16:46,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:46,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910277968] [2024-06-27 23:16:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:46,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:49,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:49,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910277968] [2024-06-27 23:16:49,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910277968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:49,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:49,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:16:49,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498593162] [2024-06-27 23:16:49,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:16:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:16:49,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:16:50,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:50,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 369 transitions, 3073 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:50,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:50,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:50,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:51,207 INFO L124 PetriNetUnfolderBase]: 774/1523 cut-off events. [2024-06-27 23:16:51,208 INFO L125 PetriNetUnfolderBase]: For 446936/446936 co-relation queries the response was YES. [2024-06-27 23:16:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9400 conditions, 1523 events. 774/1523 cut-off events. For 446936/446936 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9726 event pairs, 87 based on Foata normal form. 8/1530 useless extension candidates. Maximal degree in co-relation 9189. Up to 1258 conditions per place. [2024-06-27 23:16:51,230 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 320 selfloop transitions, 54 changer transitions 9/386 dead transitions. [2024-06-27 23:16:51,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 386 transitions, 3903 flow [2024-06-27 23:16:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:16:51,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:16:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 23:16:51,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-27 23:16:51,231 INFO L175 Difference]: Start difference. First operand has 469 places, 369 transitions, 3073 flow. Second operand 12 states and 154 transitions. [2024-06-27 23:16:51,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 386 transitions, 3903 flow [2024-06-27 23:16:52,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 386 transitions, 3778 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 23:16:52,663 INFO L231 Difference]: Finished difference. Result has 465 places, 366 transitions, 3037 flow [2024-06-27 23:16:52,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3037, PETRI_PLACES=465, PETRI_TRANSITIONS=366} [2024-06-27 23:16:52,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-27 23:16:52,664 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 366 transitions, 3037 flow [2024-06-27 23:16:52,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:52,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:52,664 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 23:16:52,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:16:52,664 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:52,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:52,665 INFO L85 PathProgramCache]: Analyzing trace with hash 363677738, now seen corresponding path program 3 times [2024-06-27 23:16:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:52,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379620832] [2024-06-27 23:16:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:52,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:16:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:16:56,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:16:56,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379620832] [2024-06-27 23:16:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379620832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:16:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:16:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:16:56,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469151049] [2024-06-27 23:16:56,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:16:56,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:16:56,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:16:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:16:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:16:56,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:16:56,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 366 transitions, 3037 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:56,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:16:56,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:16:56,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:16:57,770 INFO L124 PetriNetUnfolderBase]: 747/1470 cut-off events. [2024-06-27 23:16:57,770 INFO L125 PetriNetUnfolderBase]: For 304236/304236 co-relation queries the response was YES. [2024-06-27 23:16:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7677 conditions, 1470 events. 747/1470 cut-off events. For 304236/304236 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9345 event pairs, 75 based on Foata normal form. 8/1477 useless extension candidates. Maximal degree in co-relation 7469. Up to 1208 conditions per place. [2024-06-27 23:16:57,794 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 323 selfloop transitions, 48 changer transitions 9/383 dead transitions. [2024-06-27 23:16:57,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 383 transitions, 3861 flow [2024-06-27 23:16:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:16:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:16:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:16:57,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:16:57,796 INFO L175 Difference]: Start difference. First operand has 465 places, 366 transitions, 3037 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:16:57,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 383 transitions, 3861 flow [2024-06-27 23:16:58,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 383 transitions, 3749 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:16:58,565 INFO L231 Difference]: Finished difference. Result has 463 places, 363 transitions, 3002 flow [2024-06-27 23:16:58,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3002, PETRI_PLACES=463, PETRI_TRANSITIONS=363} [2024-06-27 23:16:58,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-27 23:16:58,566 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 363 transitions, 3002 flow [2024-06-27 23:16:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:16:58,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:16:58,566 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 23:16:58,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:16:58,567 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:16:58,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:16:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash 874909372, now seen corresponding path program 11 times [2024-06-27 23:16:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:16:58,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078902891] [2024-06-27 23:16:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:16:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:16:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:00,979 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 23:17:00,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:00,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078902891] [2024-06-27 23:17:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078902891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:00,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:00,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12171733] [2024-06-27 23:17:00,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:00,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:01,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:01,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 363 transitions, 3002 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:01,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:01,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:01,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:01,742 INFO L124 PetriNetUnfolderBase]: 734/1444 cut-off events. [2024-06-27 23:17:01,743 INFO L125 PetriNetUnfolderBase]: For 204133/204133 co-relation queries the response was YES. [2024-06-27 23:17:01,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7641 conditions, 1444 events. 734/1444 cut-off events. For 204133/204133 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9171 event pairs, 65 based on Foata normal form. 2/1445 useless extension candidates. Maximal degree in co-relation 7434. Up to 1070 conditions per place. [2024-06-27 23:17:01,762 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 275 selfloop transitions, 97 changer transitions 0/375 dead transitions. [2024-06-27 23:17:01,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 375 transitions, 3828 flow [2024-06-27 23:17:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:17:01,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-27 23:17:01,764 INFO L175 Difference]: Start difference. First operand has 463 places, 363 transitions, 3002 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:17:01,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 375 transitions, 3828 flow [2024-06-27 23:17:02,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 375 transitions, 3728 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:02,491 INFO L231 Difference]: Finished difference. Result has 458 places, 364 transitions, 3160 flow [2024-06-27 23:17:02,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3160, PETRI_PLACES=458, PETRI_TRANSITIONS=364} [2024-06-27 23:17:02,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-27 23:17:02,492 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 364 transitions, 3160 flow [2024-06-27 23:17:02,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:02,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:02,492 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 23:17:02,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:17:02,493 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:02,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 874904722, now seen corresponding path program 12 times [2024-06-27 23:17:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871119610] [2024-06-27 23:17:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:04,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:04,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871119610] [2024-06-27 23:17:04,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871119610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:04,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:04,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475530519] [2024-06-27 23:17:04,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:04,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:04,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:04,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:05,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:05,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 364 transitions, 3160 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:05,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:05,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:05,731 INFO L124 PetriNetUnfolderBase]: 767/1511 cut-off events. [2024-06-27 23:17:05,731 INFO L125 PetriNetUnfolderBase]: For 368982/368982 co-relation queries the response was YES. [2024-06-27 23:17:05,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 1511 events. 767/1511 cut-off events. For 368982/368982 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9642 event pairs, 76 based on Foata normal form. 2/1512 useless extension candidates. Maximal degree in co-relation 9855. Up to 1048 conditions per place. [2024-06-27 23:17:05,753 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 99 changer transitions 0/382 dead transitions. [2024-06-27 23:17:05,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 382 transitions, 4462 flow [2024-06-27 23:17:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:17:05,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-27 23:17:05,754 INFO L175 Difference]: Start difference. First operand has 458 places, 364 transitions, 3160 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:17:05,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 382 transitions, 4462 flow [2024-06-27 23:17:07,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 382 transitions, 4214 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:07,045 INFO L231 Difference]: Finished difference. Result has 460 places, 366 transitions, 3237 flow [2024-06-27 23:17:07,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3237, PETRI_PLACES=460, PETRI_TRANSITIONS=366} [2024-06-27 23:17:07,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-27 23:17:07,046 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 366 transitions, 3237 flow [2024-06-27 23:17:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:07,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:07,046 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 23:17:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:17:07,046 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:07,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 881338462, now seen corresponding path program 13 times [2024-06-27 23:17:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205667732] [2024-06-27 23:17:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:09,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:09,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205667732] [2024-06-27 23:17:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205667732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:09,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:09,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:17:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772180362] [2024-06-27 23:17:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:17:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:09,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:17:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:17:09,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:09,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 366 transitions, 3237 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 23:17:09,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:09,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:09,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:10,254 INFO L124 PetriNetUnfolderBase]: 783/1547 cut-off events. [2024-06-27 23:17:10,255 INFO L125 PetriNetUnfolderBase]: For 505028/505028 co-relation queries the response was YES. [2024-06-27 23:17:10,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 1547 events. 783/1547 cut-off events. For 505028/505028 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 9928 event pairs, 82 based on Foata normal form. 10/1556 useless extension candidates. Maximal degree in co-relation 10033. Up to 1141 conditions per place. [2024-06-27 23:17:10,277 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 283 selfloop transitions, 89 changer transitions 6/381 dead transitions. [2024-06-27 23:17:10,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 381 transitions, 4111 flow [2024-06-27 23:17:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 23:17:10,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-27 23:17:10,278 INFO L175 Difference]: Start difference. First operand has 460 places, 366 transitions, 3237 flow. Second operand 10 states and 142 transitions. [2024-06-27 23:17:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 381 transitions, 4111 flow [2024-06-27 23:17:11,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 381 transitions, 3844 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:17:11,708 INFO L231 Difference]: Finished difference. Result has 463 places, 364 transitions, 3194 flow [2024-06-27 23:17:11,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=463, PETRI_TRANSITIONS=364} [2024-06-27 23:17:11,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-27 23:17:11,708 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 364 transitions, 3194 flow [2024-06-27 23:17:11,709 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 23:17:11,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:11,709 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 23:17:11,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:17:11,709 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:11,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1008305842, now seen corresponding path program 14 times [2024-06-27 23:17:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:11,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631990940] [2024-06-27 23:17:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:11,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631990940] [2024-06-27 23:17:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631990940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:14,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:14,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335237932] [2024-06-27 23:17:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:14,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 364 transitions, 3194 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 23:17:14,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:15,080 INFO L124 PetriNetUnfolderBase]: 782/1550 cut-off events. [2024-06-27 23:17:15,081 INFO L125 PetriNetUnfolderBase]: For 510366/510366 co-relation queries the response was YES. [2024-06-27 23:17:15,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10185 conditions, 1550 events. 782/1550 cut-off events. For 510366/510366 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9979 event pairs, 86 based on Foata normal form. 10/1559 useless extension candidates. Maximal degree in co-relation 9977. Up to 1302 conditions per place. [2024-06-27 23:17:15,102 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 42 changer transitions 13/379 dead transitions. [2024-06-27 23:17:15,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 379 transitions, 4062 flow [2024-06-27 23:17:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:17:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 23:17:15,104 INFO L175 Difference]: Start difference. First operand has 463 places, 364 transitions, 3194 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:17:15,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 379 transitions, 4062 flow [2024-06-27 23:17:16,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 379 transitions, 3844 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:17:16,370 INFO L231 Difference]: Finished difference. Result has 466 places, 358 transitions, 3020 flow [2024-06-27 23:17:16,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3020, PETRI_PLACES=466, PETRI_TRANSITIONS=358} [2024-06-27 23:17:16,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2024-06-27 23:17:16,371 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 358 transitions, 3020 flow [2024-06-27 23:17:16,371 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 23:17:16,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:16,371 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 23:17:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:17:16,372 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:16,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1102983502, now seen corresponding path program 15 times [2024-06-27 23:17:16,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:16,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912558077] [2024-06-27 23:17:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:16,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:18,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912558077] [2024-06-27 23:17:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912558077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:18,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:17:18,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777447020] [2024-06-27 23:17:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:17:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:17:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:17:18,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:18,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 358 transitions, 3020 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 23:17:18,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:18,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:18,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:19,428 INFO L124 PetriNetUnfolderBase]: 743/1473 cut-off events. [2024-06-27 23:17:19,428 INFO L125 PetriNetUnfolderBase]: For 342891/342891 co-relation queries the response was YES. [2024-06-27 23:17:19,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7749 conditions, 1473 events. 743/1473 cut-off events. For 342891/342891 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9447 event pairs, 69 based on Foata normal form. 10/1482 useless extension candidates. Maximal degree in co-relation 7540. Up to 1080 conditions per place. [2024-06-27 23:17:19,449 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 98 changer transitions 7/372 dead transitions. [2024-06-27 23:17:19,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 372 transitions, 3814 flow [2024-06-27 23:17:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:17:19,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-27 23:17:19,450 INFO L175 Difference]: Start difference. First operand has 466 places, 358 transitions, 3020 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:17:19,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 372 transitions, 3814 flow [2024-06-27 23:17:20,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 372 transitions, 3687 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:20,155 INFO L231 Difference]: Finished difference. Result has 462 places, 354 transitions, 3063 flow [2024-06-27 23:17:20,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3063, PETRI_PLACES=462, PETRI_TRANSITIONS=354} [2024-06-27 23:17:20,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-27 23:17:20,155 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 354 transitions, 3063 flow [2024-06-27 23:17:20,156 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 23:17:20,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:20,156 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 23:17:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:17:20,156 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:20,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash 635344726, now seen corresponding path program 16 times [2024-06-27 23:17:20,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:20,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887436102] [2024-06-27 23:17:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:20,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887436102] [2024-06-27 23:17:22,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887436102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:22,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:22,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:17:22,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517911124] [2024-06-27 23:17:22,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:22,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:17:22,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:17:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:17:22,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:17:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 354 transitions, 3063 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 23:17:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:17:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:22,964 INFO L124 PetriNetUnfolderBase]: 740/1470 cut-off events. [2024-06-27 23:17:22,965 INFO L125 PetriNetUnfolderBase]: For 340098/340098 co-relation queries the response was YES. [2024-06-27 23:17:22,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7864 conditions, 1470 events. 740/1470 cut-off events. For 340098/340098 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9456 event pairs, 69 based on Foata normal form. 10/1479 useless extension candidates. Maximal degree in co-relation 7656. Up to 1203 conditions per place. [2024-06-27 23:17:22,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 55 changer transitions 6/369 dead transitions. [2024-06-27 23:17:22,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 369 transitions, 3909 flow [2024-06-27 23:17:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:17:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:17:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:17:22,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-27 23:17:22,986 INFO L175 Difference]: Start difference. First operand has 462 places, 354 transitions, 3063 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:17:22,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 369 transitions, 3909 flow [2024-06-27 23:17:23,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 369 transitions, 3673 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:23,725 INFO L231 Difference]: Finished difference. Result has 461 places, 352 transitions, 2981 flow [2024-06-27 23:17:23,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2981, PETRI_PLACES=461, PETRI_TRANSITIONS=352} [2024-06-27 23:17:23,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-27 23:17:23,736 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 352 transitions, 2981 flow [2024-06-27 23:17:23,736 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 23:17:23,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:23,737 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 23:17:23,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:17:23,737 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:23,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -842072062, now seen corresponding path program 17 times [2024-06-27 23:17:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818795661] [2024-06-27 23:17:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:26,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818795661] [2024-06-27 23:17:26,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818795661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:26,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:26,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995981788] [2024-06-27 23:17:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:26,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:26,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 352 transitions, 2981 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 23:17:26,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:26,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:26,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:27,068 INFO L124 PetriNetUnfolderBase]: 727/1441 cut-off events. [2024-06-27 23:17:27,068 INFO L125 PetriNetUnfolderBase]: For 210720/210720 co-relation queries the response was YES. [2024-06-27 23:17:27,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7741 conditions, 1441 events. 727/1441 cut-off events. For 210720/210720 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9217 event pairs, 67 based on Foata normal form. 2/1442 useless extension candidates. Maximal degree in co-relation 7533. Up to 1232 conditions per place. [2024-06-27 23:17:27,088 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 53 changer transitions 0/364 dead transitions. [2024-06-27 23:17:27,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 364 transitions, 3789 flow [2024-06-27 23:17:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:17:27,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 23:17:27,089 INFO L175 Difference]: Start difference. First operand has 461 places, 352 transitions, 2981 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:17:27,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 364 transitions, 3789 flow [2024-06-27 23:17:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 364 transitions, 3551 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:17:27,786 INFO L231 Difference]: Finished difference. Result has 462 places, 353 transitions, 2917 flow [2024-06-27 23:17:27,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2917, PETRI_PLACES=462, PETRI_TRANSITIONS=353} [2024-06-27 23:17:27,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-27 23:17:27,786 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 353 transitions, 2917 flow [2024-06-27 23:17:27,786 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 23:17:27,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:27,787 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 23:17:27,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:17:27,787 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:27,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1008483472, now seen corresponding path program 18 times [2024-06-27 23:17:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:27,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127209554] [2024-06-27 23:17:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127209554] [2024-06-27 23:17:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127209554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:30,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:30,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526782429] [2024-06-27 23:17:30,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:30,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:30,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:30,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 353 transitions, 2917 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 23:17:30,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:30,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:30,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:31,052 INFO L124 PetriNetUnfolderBase]: 739/1469 cut-off events. [2024-06-27 23:17:31,052 INFO L125 PetriNetUnfolderBase]: For 308100/308100 co-relation queries the response was YES. [2024-06-27 23:17:31,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7766 conditions, 1469 events. 739/1469 cut-off events. For 308100/308100 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9450 event pairs, 67 based on Foata normal form. 8/1476 useless extension candidates. Maximal degree in co-relation 7558. Up to 1231 conditions per place. [2024-06-27 23:17:31,073 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 313 selfloop transitions, 38 changer transitions 14/368 dead transitions. [2024-06-27 23:17:31,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 368 transitions, 3749 flow [2024-06-27 23:17:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:17:31,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 23:17:31,074 INFO L175 Difference]: Start difference. First operand has 462 places, 353 transitions, 2917 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:17:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 368 transitions, 3749 flow [2024-06-27 23:17:31,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 368 transitions, 3585 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:31,805 INFO L231 Difference]: Finished difference. Result has 464 places, 347 transitions, 2799 flow [2024-06-27 23:17:31,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=464, PETRI_TRANSITIONS=347} [2024-06-27 23:17:31,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-27 23:17:31,805 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 347 transitions, 2799 flow [2024-06-27 23:17:31,806 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 23:17:31,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:31,806 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 23:17:31,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:17:31,806 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:31,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1013067442, now seen corresponding path program 19 times [2024-06-27 23:17:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919651952] [2024-06-27 23:17:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:31,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:34,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:34,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919651952] [2024-06-27 23:17:34,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919651952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:34,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:34,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:34,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067932533] [2024-06-27 23:17:34,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:34,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:34,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:34,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:34,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 347 transitions, 2799 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 23:17:34,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:34,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:34,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:34,800 INFO L124 PetriNetUnfolderBase]: 717/1423 cut-off events. [2024-06-27 23:17:34,800 INFO L125 PetriNetUnfolderBase]: For 213263/213263 co-relation queries the response was YES. [2024-06-27 23:17:34,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 1423 events. 717/1423 cut-off events. For 213263/213263 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9088 event pairs, 63 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 7278. Up to 1199 conditions per place. [2024-06-27 23:17:34,820 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 315 selfloop transitions, 43 changer transitions 0/361 dead transitions. [2024-06-27 23:17:34,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 361 transitions, 3607 flow [2024-06-27 23:17:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:17:34,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:17:34,821 INFO L175 Difference]: Start difference. First operand has 464 places, 347 transitions, 2799 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:17:34,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 361 transitions, 3607 flow [2024-06-27 23:17:35,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 361 transitions, 3521 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:17:35,522 INFO L231 Difference]: Finished difference. Result has 456 places, 348 transitions, 2870 flow [2024-06-27 23:17:35,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2870, PETRI_PLACES=456, PETRI_TRANSITIONS=348} [2024-06-27 23:17:35,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-27 23:17:35,523 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 348 transitions, 2870 flow [2024-06-27 23:17:35,523 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 23:17:35,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:35,523 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 23:17:35,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:17:35,523 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:35,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -842249692, now seen corresponding path program 20 times [2024-06-27 23:17:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592967784] [2024-06-27 23:17:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592967784] [2024-06-27 23:17:37,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592967784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:37,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:37,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:37,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749903108] [2024-06-27 23:17:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:37,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:38,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:38,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 348 transitions, 2870 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 23:17:38,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:38,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:38,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:38,684 INFO L124 PetriNetUnfolderBase]: 721/1431 cut-off events. [2024-06-27 23:17:38,684 INFO L125 PetriNetUnfolderBase]: For 206712/206712 co-relation queries the response was YES. [2024-06-27 23:17:38,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7617 conditions, 1431 events. 721/1431 cut-off events. For 206712/206712 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9143 event pairs, 67 based on Foata normal form. 2/1432 useless extension candidates. Maximal degree in co-relation 7412. Up to 1192 conditions per place. [2024-06-27 23:17:38,703 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 303 selfloop transitions, 55 changer transitions 0/361 dead transitions. [2024-06-27 23:17:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 361 transitions, 3678 flow [2024-06-27 23:17:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:17:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:17:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:17:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 23:17:38,705 INFO L175 Difference]: Start difference. First operand has 456 places, 348 transitions, 2870 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:17:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 361 transitions, 3678 flow [2024-06-27 23:17:39,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 361 transitions, 3533 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:39,371 INFO L231 Difference]: Finished difference. Result has 458 places, 349 transitions, 2908 flow [2024-06-27 23:17:39,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2908, PETRI_PLACES=458, PETRI_TRANSITIONS=349} [2024-06-27 23:17:39,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 428 predicate places. [2024-06-27 23:17:39,371 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 349 transitions, 2908 flow [2024-06-27 23:17:39,371 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 23:17:39,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:39,372 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 23:17:39,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:17:39,372 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:39,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 875089296, now seen corresponding path program 4 times [2024-06-27 23:17:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058461511] [2024-06-27 23:17:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:42,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058461511] [2024-06-27 23:17:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058461511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:17:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394895198] [2024-06-27 23:17:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:42,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:17:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:17:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:17:43,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:43,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 349 transitions, 2908 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:43,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:43,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:44,307 INFO L124 PetriNetUnfolderBase]: 733/1463 cut-off events. [2024-06-27 23:17:44,308 INFO L125 PetriNetUnfolderBase]: For 308787/308787 co-relation queries the response was YES. [2024-06-27 23:17:44,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 1463 events. 733/1463 cut-off events. For 308787/308787 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9416 event pairs, 75 based on Foata normal form. 8/1470 useless extension candidates. Maximal degree in co-relation 7452. Up to 1090 conditions per place. [2024-06-27 23:17:44,327 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 78 changer transitions 9/364 dead transitions. [2024-06-27 23:17:44,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 364 transitions, 3688 flow [2024-06-27 23:17:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:17:44,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-27 23:17:44,329 INFO L175 Difference]: Start difference. First operand has 458 places, 349 transitions, 2908 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:17:44,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 364 transitions, 3688 flow [2024-06-27 23:17:44,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 364 transitions, 3517 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 23:17:44,961 INFO L231 Difference]: Finished difference. Result has 461 places, 346 transitions, 2877 flow [2024-06-27 23:17:44,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2877, PETRI_PLACES=461, PETRI_TRANSITIONS=346} [2024-06-27 23:17:44,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-27 23:17:44,962 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 346 transitions, 2877 flow [2024-06-27 23:17:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:44,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:44,962 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 23:17:44,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:17:44,963 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 881584416, now seen corresponding path program 5 times [2024-06-27 23:17:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944979890] [2024-06-27 23:17:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:44,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:47,549 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 23:17:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944979890] [2024-06-27 23:17:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944979890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:47,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:47,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502681527] [2024-06-27 23:17:47,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:47,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:47,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 346 transitions, 2877 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:47,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:47,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:47,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:48,404 INFO L124 PetriNetUnfolderBase]: 746/1494 cut-off events. [2024-06-27 23:17:48,404 INFO L125 PetriNetUnfolderBase]: For 408171/408171 co-relation queries the response was YES. [2024-06-27 23:17:48,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9173 conditions, 1494 events. 746/1494 cut-off events. For 408171/408171 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9627 event pairs, 81 based on Foata normal form. 6/1499 useless extension candidates. Maximal degree in co-relation 8966. Up to 1076 conditions per place. [2024-06-27 23:17:48,426 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 281 selfloop transitions, 74 changer transitions 7/365 dead transitions. [2024-06-27 23:17:48,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 365 transitions, 4055 flow [2024-06-27 23:17:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 23:17:48,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-06-27 23:17:48,427 INFO L175 Difference]: Start difference. First operand has 461 places, 346 transitions, 2877 flow. Second operand 12 states and 161 transitions. [2024-06-27 23:17:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 365 transitions, 4055 flow [2024-06-27 23:17:49,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 365 transitions, 3891 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:17:49,534 INFO L231 Difference]: Finished difference. Result has 459 places, 343 transitions, 2847 flow [2024-06-27 23:17:49,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2847, PETRI_PLACES=459, PETRI_TRANSITIONS=343} [2024-06-27 23:17:49,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-27 23:17:49,534 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 343 transitions, 2847 flow [2024-06-27 23:17:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:49,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:49,535 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 23:17:49,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 23:17:49,535 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:49,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash 881345406, now seen corresponding path program 6 times [2024-06-27 23:17:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:49,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649708548] [2024-06-27 23:17:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649708548] [2024-06-27 23:17:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649708548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330121290] [2024-06-27 23:17:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:53,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:53,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 343 transitions, 2847 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:53,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:53,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:53,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:54,045 INFO L124 PetriNetUnfolderBase]: 721/1439 cut-off events. [2024-06-27 23:17:54,045 INFO L125 PetriNetUnfolderBase]: For 304722/304722 co-relation queries the response was YES. [2024-06-27 23:17:54,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1439 events. 721/1439 cut-off events. For 304722/304722 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9230 event pairs, 73 based on Foata normal form. 8/1446 useless extension candidates. Maximal degree in co-relation 7280. Up to 1097 conditions per place. [2024-06-27 23:17:54,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 279 selfloop transitions, 67 changer transitions 9/358 dead transitions. [2024-06-27 23:17:54,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 358 transitions, 3615 flow [2024-06-27 23:17:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-27 23:17:54,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:17:54,061 INFO L175 Difference]: Start difference. First operand has 459 places, 343 transitions, 2847 flow. Second operand 12 states and 155 transitions. [2024-06-27 23:17:54,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 358 transitions, 3615 flow [2024-06-27 23:17:54,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 358 transitions, 3463 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 23:17:54,798 INFO L231 Difference]: Finished difference. Result has 456 places, 340 transitions, 2811 flow [2024-06-27 23:17:54,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2811, PETRI_PLACES=456, PETRI_TRANSITIONS=340} [2024-06-27 23:17:54,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-27 23:17:54,798 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 340 transitions, 2811 flow [2024-06-27 23:17:54,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:54,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:17:54,799 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 23:17:54,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 23:17:54,799 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:17:54,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:17:54,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1102990446, now seen corresponding path program 7 times [2024-06-27 23:17:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:17:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746434573] [2024-06-27 23:17:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:17:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:17:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:17:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:17:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:17:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746434573] [2024-06-27 23:17:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746434573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:17:58,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:17:58,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:17:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515138735] [2024-06-27 23:17:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:17:58,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:17:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:17:58,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:17:58,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:17:58,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:17:58,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 340 transitions, 2811 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:17:58,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:17:58,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:17:58,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:17:59,614 INFO L124 PetriNetUnfolderBase]: 716/1432 cut-off events. [2024-06-27 23:17:59,614 INFO L125 PetriNetUnfolderBase]: For 298166/298166 co-relation queries the response was YES. [2024-06-27 23:17:59,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7420 conditions, 1432 events. 716/1432 cut-off events. For 298166/298166 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9173 event pairs, 73 based on Foata normal form. 8/1439 useless extension candidates. Maximal degree in co-relation 7216. Up to 1090 conditions per place. [2024-06-27 23:17:59,630 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 80 changer transitions 9/355 dead transitions. [2024-06-27 23:17:59,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 355 transitions, 3573 flow [2024-06-27 23:17:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:17:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:17:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 23:17:59,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-27 23:17:59,631 INFO L175 Difference]: Start difference. First operand has 456 places, 340 transitions, 2811 flow. Second operand 12 states and 154 transitions. [2024-06-27 23:17:59,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 355 transitions, 3573 flow [2024-06-27 23:18:00,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 355 transitions, 3435 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:00,404 INFO L231 Difference]: Finished difference. Result has 453 places, 337 transitions, 2817 flow [2024-06-27 23:18:00,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2817, PETRI_PLACES=453, PETRI_TRANSITIONS=337} [2024-06-27 23:18:00,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-27 23:18:00,405 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 337 transitions, 2817 flow [2024-06-27 23:18:00,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:00,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:00,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:18:00,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 23:18:00,405 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:00,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:00,406 INFO L85 PathProgramCache]: Analyzing trace with hash -835809008, now seen corresponding path program 8 times [2024-06-27 23:18:00,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:00,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137269007] [2024-06-27 23:18:00,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:00,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:03,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:03,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137269007] [2024-06-27 23:18:03,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137269007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:03,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:03,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:18:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503947259] [2024-06-27 23:18:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:18:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:18:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:18:04,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 23:18:04,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 337 transitions, 2817 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:04,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:04,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 23:18:04,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:05,207 INFO L124 PetriNetUnfolderBase]: 711/1429 cut-off events. [2024-06-27 23:18:05,207 INFO L125 PetriNetUnfolderBase]: For 297043/297043 co-relation queries the response was YES. [2024-06-27 23:18:05,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 1429 events. 711/1429 cut-off events. For 297043/297043 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9201 event pairs, 75 based on Foata normal form. 8/1436 useless extension candidates. Maximal degree in co-relation 7206. Up to 1175 conditions per place. [2024-06-27 23:18:05,226 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 292 selfloop transitions, 48 changer transitions 9/352 dead transitions. [2024-06-27 23:18:05,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 352 transitions, 3573 flow [2024-06-27 23:18:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 23:18:05,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 23:18:05,227 INFO L175 Difference]: Start difference. First operand has 453 places, 337 transitions, 2817 flow. Second operand 12 states and 142 transitions. [2024-06-27 23:18:05,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 352 transitions, 3573 flow [2024-06-27 23:18:05,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 352 transitions, 3409 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:05,835 INFO L231 Difference]: Finished difference. Result has 451 places, 334 transitions, 2733 flow [2024-06-27 23:18:05,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2733, PETRI_PLACES=451, PETRI_TRANSITIONS=334} [2024-06-27 23:18:05,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 421 predicate places. [2024-06-27 23:18:05,835 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 334 transitions, 2733 flow [2024-06-27 23:18:05,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:05,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:05,836 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 23:18:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 23:18:05,836 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:05,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1111561326, now seen corresponding path program 9 times [2024-06-27 23:18:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:05,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017627035] [2024-06-27 23:18:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017627035] [2024-06-27 23:18:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017627035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:08,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544549210] [2024-06-27 23:18:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:08,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 334 transitions, 2733 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:08,807 INFO L124 PetriNetUnfolderBase]: 724/1464 cut-off events. [2024-06-27 23:18:08,807 INFO L125 PetriNetUnfolderBase]: For 386191/386191 co-relation queries the response was YES. [2024-06-27 23:18:08,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8886 conditions, 1464 events. 724/1464 cut-off events. For 386191/386191 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9394 event pairs, 81 based on Foata normal form. 6/1469 useless extension candidates. Maximal degree in co-relation 8684. Up to 1016 conditions per place. [2024-06-27 23:18:08,827 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 82 changer transitions 9/354 dead transitions. [2024-06-27 23:18:08,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 354 transitions, 3881 flow [2024-06-27 23:18:08,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 23:18:08,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-27 23:18:08,828 INFO L175 Difference]: Start difference. First operand has 451 places, 334 transitions, 2733 flow. Second operand 12 states and 159 transitions. [2024-06-27 23:18:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 354 transitions, 3881 flow [2024-06-27 23:18:10,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 354 transitions, 3777 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:10,125 INFO L231 Difference]: Finished difference. Result has 449 places, 331 transitions, 2780 flow [2024-06-27 23:18:10,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2780, PETRI_PLACES=449, PETRI_TRANSITIONS=331} [2024-06-27 23:18:10,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-27 23:18:10,125 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 331 transitions, 2780 flow [2024-06-27 23:18:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:10,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:10,127 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 23:18:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 23:18:10,127 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:10,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1921978068, now seen corresponding path program 10 times [2024-06-27 23:18:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557200089] [2024-06-27 23:18:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:12,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:12,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557200089] [2024-06-27 23:18:12,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557200089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:12,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:12,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:18:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102026469] [2024-06-27 23:18:12,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:12,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:18:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:18:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:18:12,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:12,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 331 transitions, 2780 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 23:18:12,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:12,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:12,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:13,137 INFO L124 PetriNetUnfolderBase]: 729/1479 cut-off events. [2024-06-27 23:18:13,138 INFO L125 PetriNetUnfolderBase]: For 478101/478101 co-relation queries the response was YES. [2024-06-27 23:18:13,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1479 events. 729/1479 cut-off events. For 478101/478101 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9517 event pairs, 92 based on Foata normal form. 6/1484 useless extension candidates. Maximal degree in co-relation 9868. Up to 1176 conditions per place. [2024-06-27 23:18:13,159 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 294 selfloop transitions, 46 changer transitions 7/350 dead transitions. [2024-06-27 23:18:13,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 350 transitions, 3916 flow [2024-06-27 23:18:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:13,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:18:13,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:18:13,161 INFO L175 Difference]: Start difference. First operand has 449 places, 331 transitions, 2780 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:18:13,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 350 transitions, 3916 flow [2024-06-27 23:18:14,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 350 transitions, 3745 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:14,500 INFO L231 Difference]: Finished difference. Result has 445 places, 328 transitions, 2688 flow [2024-06-27 23:18:14,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2688, PETRI_PLACES=445, PETRI_TRANSITIONS=328} [2024-06-27 23:18:14,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-27 23:18:14,501 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 328 transitions, 2688 flow [2024-06-27 23:18:14,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 23:18:14,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:14,501 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 23:18:14,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 23:18:14,501 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:14,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1111273026, now seen corresponding path program 11 times [2024-06-27 23:18:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:14,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22378733] [2024-06-27 23:18:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22378733] [2024-06-27 23:18:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22378733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:17,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:18:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370937162] [2024-06-27 23:18:17,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:17,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:18:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:17,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:18:17,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:18:17,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:17,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 328 transitions, 2688 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:17,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:17,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:17,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:18,823 INFO L124 PetriNetUnfolderBase]: 722/1466 cut-off events. [2024-06-27 23:18:18,824 INFO L125 PetriNetUnfolderBase]: For 465156/465156 co-relation queries the response was YES. [2024-06-27 23:18:18,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9910 conditions, 1466 events. 722/1466 cut-off events. For 465156/465156 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9413 event pairs, 92 based on Foata normal form. 6/1471 useless extension candidates. Maximal degree in co-relation 9711. Up to 1109 conditions per place. [2024-06-27 23:18:18,845 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 78 changer transitions 11/343 dead transitions. [2024-06-27 23:18:18,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 343 transitions, 3418 flow [2024-06-27 23:18:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:18:18,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-27 23:18:18,846 INFO L175 Difference]: Start difference. First operand has 445 places, 328 transitions, 2688 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:18:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 343 transitions, 3418 flow [2024-06-27 23:18:20,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 343 transitions, 3324 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:18:20,393 INFO L231 Difference]: Finished difference. Result has 444 places, 324 transitions, 2726 flow [2024-06-27 23:18:20,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2726, PETRI_PLACES=444, PETRI_TRANSITIONS=324} [2024-06-27 23:18:20,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-27 23:18:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 324 transitions, 2726 flow [2024-06-27 23:18:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:20,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:20,394 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 23:18:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 23:18:20,394 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -842065118, now seen corresponding path program 12 times [2024-06-27 23:18:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838285865] [2024-06-27 23:18:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:23,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838285865] [2024-06-27 23:18:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838285865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:18:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889758346] [2024-06-27 23:18:23,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:23,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:18:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:18:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:18:23,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:23,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 324 transitions, 2726 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:23,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:23,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:24,405 INFO L124 PetriNetUnfolderBase]: 696/1408 cut-off events. [2024-06-27 23:18:24,405 INFO L125 PetriNetUnfolderBase]: For 369452/369452 co-relation queries the response was YES. [2024-06-27 23:18:24,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8344 conditions, 1408 events. 696/1408 cut-off events. For 369452/369452 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8986 event pairs, 84 based on Foata normal form. 8/1415 useless extension candidates. Maximal degree in co-relation 8146. Up to 1160 conditions per place. [2024-06-27 23:18:24,424 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 45 changer transitions 9/339 dead transitions. [2024-06-27 23:18:24,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 339 transitions, 3456 flow [2024-06-27 23:18:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:24,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 23:18:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-27 23:18:24,425 INFO L175 Difference]: Start difference. First operand has 444 places, 324 transitions, 2726 flow. Second operand 12 states and 151 transitions. [2024-06-27 23:18:24,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 339 transitions, 3456 flow [2024-06-27 23:18:25,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 339 transitions, 3288 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:18:25,423 INFO L231 Difference]: Finished difference. Result has 438 places, 321 transitions, 2630 flow [2024-06-27 23:18:25,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2630, PETRI_PLACES=438, PETRI_TRANSITIONS=321} [2024-06-27 23:18:25,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 23:18:25,424 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 321 transitions, 2630 flow [2024-06-27 23:18:25,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:25,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:25,424 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 23:18:25,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 23:18:25,425 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:25,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash -434189774, now seen corresponding path program 13 times [2024-06-27 23:18:25,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:25,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538011834] [2024-06-27 23:18:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:25,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538011834] [2024-06-27 23:18:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538011834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409489385] [2024-06-27 23:18:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:28,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:28,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 321 transitions, 2630 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:28,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:28,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:28,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:28,655 INFO L124 PetriNetUnfolderBase]: 672/1360 cut-off events. [2024-06-27 23:18:28,655 INFO L125 PetriNetUnfolderBase]: For 239700/239700 co-relation queries the response was YES. [2024-06-27 23:18:28,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6993 conditions, 1360 events. 672/1360 cut-off events. For 239700/239700 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8659 event pairs, 67 based on Foata normal form. 6/1365 useless extension candidates. Maximal degree in co-relation 6798. Up to 1016 conditions per place. [2024-06-27 23:18:28,674 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 249 selfloop transitions, 74 changer transitions 10/336 dead transitions. [2024-06-27 23:18:28,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 336 transitions, 3346 flow [2024-06-27 23:18:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:18:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:18:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:18:28,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-27 23:18:28,675 INFO L175 Difference]: Start difference. First operand has 438 places, 321 transitions, 2630 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:18:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 336 transitions, 3346 flow [2024-06-27 23:18:29,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 336 transitions, 3252 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:29,522 INFO L231 Difference]: Finished difference. Result has 435 places, 318 transitions, 2665 flow [2024-06-27 23:18:29,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2665, PETRI_PLACES=435, PETRI_TRANSITIONS=318} [2024-06-27 23:18:29,536 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-27 23:18:29,536 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 318 transitions, 2665 flow [2024-06-27 23:18:29,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:18:29,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:29,537 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 23:18:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 23:18:29,537 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:29,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1625149106, now seen corresponding path program 21 times [2024-06-27 23:18:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058357810] [2024-06-27 23:18:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:32,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058357810] [2024-06-27 23:18:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058357810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:32,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584665331] [2024-06-27 23:18:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:32,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:32,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 318 transitions, 2665 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 23:18:32,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:32,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:32,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:33,454 INFO L124 PetriNetUnfolderBase]: 661/1331 cut-off events. [2024-06-27 23:18:33,454 INFO L125 PetriNetUnfolderBase]: For 182154/182154 co-relation queries the response was YES. [2024-06-27 23:18:33,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7060 conditions, 1331 events. 661/1331 cut-off events. For 182154/182154 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8462 event pairs, 78 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 6866. Up to 1138 conditions per place. [2024-06-27 23:18:33,467 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 45 changer transitions 0/328 dead transitions. [2024-06-27 23:18:33,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 328 transitions, 3401 flow [2024-06-27 23:18:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:18:33,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-27 23:18:33,469 INFO L175 Difference]: Start difference. First operand has 435 places, 318 transitions, 2665 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:18:33,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 328 transitions, 3401 flow [2024-06-27 23:18:34,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 328 transitions, 3247 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:34,259 INFO L231 Difference]: Finished difference. Result has 429 places, 319 transitions, 2675 flow [2024-06-27 23:18:34,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2675, PETRI_PLACES=429, PETRI_TRANSITIONS=319} [2024-06-27 23:18:34,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-27 23:18:34,260 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 319 transitions, 2675 flow [2024-06-27 23:18:34,260 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 23:18:34,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:34,260 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 23:18:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 23:18:34,263 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:34,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1625326736, now seen corresponding path program 22 times [2024-06-27 23:18:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487761226] [2024-06-27 23:18:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:37,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:37,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487761226] [2024-06-27 23:18:37,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487761226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:37,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:37,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:37,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969460947] [2024-06-27 23:18:37,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:37,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:37,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:37,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:37,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 319 transitions, 2675 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 23:18:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:37,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:38,166 INFO L124 PetriNetUnfolderBase]: 665/1339 cut-off events. [2024-06-27 23:18:38,166 INFO L125 PetriNetUnfolderBase]: For 180220/180220 co-relation queries the response was YES. [2024-06-27 23:18:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1339 events. 665/1339 cut-off events. For 180220/180220 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8512 event pairs, 78 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6951. Up to 1132 conditions per place. [2024-06-27 23:18:38,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 281 selfloop transitions, 46 changer transitions 0/330 dead transitions. [2024-06-27 23:18:38,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 330 transitions, 3419 flow [2024-06-27 23:18:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:18:38,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-27 23:18:38,183 INFO L175 Difference]: Start difference. First operand has 429 places, 319 transitions, 2675 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:18:38,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 330 transitions, 3419 flow [2024-06-27 23:18:39,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 330 transitions, 3258 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:39,126 INFO L231 Difference]: Finished difference. Result has 431 places, 320 transitions, 2682 flow [2024-06-27 23:18:39,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2682, PETRI_PLACES=431, PETRI_TRANSITIONS=320} [2024-06-27 23:18:39,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-27 23:18:39,127 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 320 transitions, 2682 flow [2024-06-27 23:18:39,127 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 23:18:39,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:39,127 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 23:18:39,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 23:18:39,127 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:39,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash 7661750, now seen corresponding path program 23 times [2024-06-27 23:18:39,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043948412] [2024-06-27 23:18:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:41,041 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 23:18:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043948412] [2024-06-27 23:18:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043948412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:41,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:18:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727436226] [2024-06-27 23:18:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:18:41,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:18:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:18:41,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 23:18:41,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 320 transitions, 2682 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 23:18:41,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:41,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 23:18:41,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:41,577 INFO L124 PetriNetUnfolderBase]: 669/1347 cut-off events. [2024-06-27 23:18:41,578 INFO L125 PetriNetUnfolderBase]: For 182780/182780 co-relation queries the response was YES. [2024-06-27 23:18:41,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7189 conditions, 1347 events. 669/1347 cut-off events. For 182780/182780 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8598 event pairs, 76 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 6996. Up to 1129 conditions per place. [2024-06-27 23:18:41,612 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 286 selfloop transitions, 42 changer transitions 0/332 dead transitions. [2024-06-27 23:18:41,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 332 transitions, 3432 flow [2024-06-27 23:18:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:18:41,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-27 23:18:41,619 INFO L175 Difference]: Start difference. First operand has 431 places, 320 transitions, 2682 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:18:41,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 332 transitions, 3432 flow [2024-06-27 23:18:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 332 transitions, 3274 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 23:18:42,480 INFO L231 Difference]: Finished difference. Result has 432 places, 321 transitions, 2686 flow [2024-06-27 23:18:42,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2686, PETRI_PLACES=432, PETRI_TRANSITIONS=321} [2024-06-27 23:18:42,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-27 23:18:42,481 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 321 transitions, 2686 flow [2024-06-27 23:18:42,481 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 23:18:42,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:42,481 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 23:18:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 23:18:42,481 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:42,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1733025816, now seen corresponding path program 24 times [2024-06-27 23:18:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:42,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033733210] [2024-06-27 23:18:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:45,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:45,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033733210] [2024-06-27 23:18:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033733210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:45,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:18:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972982005] [2024-06-27 23:18:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:18:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:18:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:18:45,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:45,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 321 transitions, 2686 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 23:18:45,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:45,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:45,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:45,892 INFO L124 PetriNetUnfolderBase]: 685/1383 cut-off events. [2024-06-27 23:18:45,892 INFO L125 PetriNetUnfolderBase]: For 303614/303614 co-relation queries the response was YES. [2024-06-27 23:18:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 1383 events. 685/1383 cut-off events. For 303614/303614 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8832 event pairs, 84 based on Foata normal form. 10/1392 useless extension candidates. Maximal degree in co-relation 7142. Up to 834 conditions per place. [2024-06-27 23:18:45,911 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 128 changer transitions 5/334 dead transitions. [2024-06-27 23:18:45,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 334 transitions, 3470 flow [2024-06-27 23:18:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:18:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:18:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 23:18:45,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-27 23:18:45,912 INFO L175 Difference]: Start difference. First operand has 432 places, 321 transitions, 2686 flow. Second operand 10 states and 144 transitions. [2024-06-27 23:18:45,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 334 transitions, 3470 flow [2024-06-27 23:18:46,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 334 transitions, 3318 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:46,765 INFO L231 Difference]: Finished difference. Result has 434 places, 320 transitions, 2856 flow [2024-06-27 23:18:46,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2856, PETRI_PLACES=434, PETRI_TRANSITIONS=320} [2024-06-27 23:18:46,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-06-27 23:18:46,766 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 320 transitions, 2856 flow [2024-06-27 23:18:46,766 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 23:18:46,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:46,766 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 23:18:46,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 23:18:46,766 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:46,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 184913240, now seen corresponding path program 25 times [2024-06-27 23:18:46,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:46,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126103748] [2024-06-27 23:18:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:46,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126103748] [2024-06-27 23:18:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126103748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:48,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074811669] [2024-06-27 23:18:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:49,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:49,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 320 transitions, 2856 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 23:18:49,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:49,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:49,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:49,713 INFO L124 PetriNetUnfolderBase]: 684/1382 cut-off events. [2024-06-27 23:18:49,713 INFO L125 PetriNetUnfolderBase]: For 305875/305875 co-relation queries the response was YES. [2024-06-27 23:18:49,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 1382 events. 684/1382 cut-off events. For 305875/305875 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8848 event pairs, 84 based on Foata normal form. 10/1391 useless extension candidates. Maximal degree in co-relation 7328. Up to 1114 conditions per place. [2024-06-27 23:18:49,731 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 57 changer transitions 6/333 dead transitions. [2024-06-27 23:18:49,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 333 transitions, 3640 flow [2024-06-27 23:18:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:18:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-27 23:18:49,732 INFO L175 Difference]: Start difference. First operand has 434 places, 320 transitions, 2856 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:18:49,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 333 transitions, 3640 flow [2024-06-27 23:18:50,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 333 transitions, 3314 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 23:18:50,595 INFO L231 Difference]: Finished difference. Result has 437 places, 318 transitions, 2705 flow [2024-06-27 23:18:50,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2705, PETRI_PLACES=437, PETRI_TRANSITIONS=318} [2024-06-27 23:18:50,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 23:18:50,595 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 318 transitions, 2705 flow [2024-06-27 23:18:50,596 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 23:18:50,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:50,596 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 23:18:50,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 23:18:50,596 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:50,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:50,596 INFO L85 PathProgramCache]: Analyzing trace with hash 178657130, now seen corresponding path program 26 times [2024-06-27 23:18:50,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868732671] [2024-06-27 23:18:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:50,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:53,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:53,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868732671] [2024-06-27 23:18:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868732671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:53,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:53,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352431101] [2024-06-27 23:18:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:53,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:53,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:53,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:53,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 318 transitions, 2705 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 23:18:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:54,430 INFO L124 PetriNetUnfolderBase]: 671/1353 cut-off events. [2024-06-27 23:18:54,430 INFO L125 PetriNetUnfolderBase]: For 190708/190708 co-relation queries the response was YES. [2024-06-27 23:18:54,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 1353 events. 671/1353 cut-off events. For 190708/190708 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8620 event pairs, 80 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 7089. Up to 1122 conditions per place. [2024-06-27 23:18:54,447 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 57 changer transitions 0/328 dead transitions. [2024-06-27 23:18:54,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 328 transitions, 3451 flow [2024-06-27 23:18:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:18:54,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-27 23:18:54,449 INFO L175 Difference]: Start difference. First operand has 437 places, 318 transitions, 2705 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:18:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 328 transitions, 3451 flow [2024-06-27 23:18:55,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 328 transitions, 3239 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-27 23:18:55,367 INFO L231 Difference]: Finished difference. Result has 437 places, 319 transitions, 2691 flow [2024-06-27 23:18:55,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2691, PETRI_PLACES=437, PETRI_TRANSITIONS=319} [2024-06-27 23:18:55,367 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-27 23:18:55,367 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 319 transitions, 2691 flow [2024-06-27 23:18:55,367 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 23:18:55,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:18:55,367 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 23:18:55,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 23:18:55,368 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:18:55,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:18:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash 148330184, now seen corresponding path program 27 times [2024-06-27 23:18:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:18:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088587804] [2024-06-27 23:18:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:18:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:18:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:18:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:18:58,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:18:58,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088587804] [2024-06-27 23:18:58,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088587804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:18:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:18:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:18:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314892056] [2024-06-27 23:18:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:18:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:18:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:18:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:18:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:18:58,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:18:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 319 transitions, 2691 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 23:18:58,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:18:58,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:18:58,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:18:59,540 INFO L124 PetriNetUnfolderBase]: 675/1361 cut-off events. [2024-06-27 23:18:59,541 INFO L125 PetriNetUnfolderBase]: For 193048/193048 co-relation queries the response was YES. [2024-06-27 23:18:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 1361 events. 675/1361 cut-off events. For 193048/193048 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8690 event pairs, 82 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 7119. Up to 854 conditions per place. [2024-06-27 23:18:59,555 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 137 changer transitions 0/329 dead transitions. [2024-06-27 23:18:59,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 329 transitions, 3441 flow [2024-06-27 23:18:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:18:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:18:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:18:59,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-27 23:18:59,556 INFO L175 Difference]: Start difference. First operand has 437 places, 319 transitions, 2691 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:18:59,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 329 transitions, 3441 flow [2024-06-27 23:19:00,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 329 transitions, 3253 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:00,412 INFO L231 Difference]: Finished difference. Result has 439 places, 320 transitions, 2863 flow [2024-06-27 23:19:00,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2863, PETRI_PLACES=439, PETRI_TRANSITIONS=320} [2024-06-27 23:19:00,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-27 23:19:00,413 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 320 transitions, 2863 flow [2024-06-27 23:19:00,413 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 23:19:00,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:00,413 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 23:19:00,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-27 23:19:00,413 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:19:00,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1489419902, now seen corresponding path program 28 times [2024-06-27 23:19:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66856631] [2024-06-27 23:19:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:00,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:03,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:03,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66856631] [2024-06-27 23:19:03,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66856631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:03,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:03,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:19:03,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624395807] [2024-06-27 23:19:03,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:03,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:19:03,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:19:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:19:03,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:19:03,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 320 transitions, 2863 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 23:19:03,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:03,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:19:03,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:04,474 INFO L124 PetriNetUnfolderBase]: 708/1428 cut-off events. [2024-06-27 23:19:04,475 INFO L125 PetriNetUnfolderBase]: For 353508/353508 co-relation queries the response was YES. [2024-06-27 23:19:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9717 conditions, 1428 events. 708/1428 cut-off events. For 353508/353508 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9137 event pairs, 95 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 9519. Up to 836 conditions per place. [2024-06-27 23:19:04,494 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 193 selfloop transitions, 140 changer transitions 0/336 dead transitions. [2024-06-27 23:19:04,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 336 transitions, 4097 flow [2024-06-27 23:19:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 23:19:04,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44868035190615835 [2024-06-27 23:19:04,496 INFO L175 Difference]: Start difference. First operand has 439 places, 320 transitions, 2863 flow. Second operand 11 states and 153 transitions. [2024-06-27 23:19:04,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 336 transitions, 4097 flow [2024-06-27 23:19:05,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 336 transitions, 3747 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 23:19:05,712 INFO L231 Difference]: Finished difference. Result has 441 places, 322 transitions, 2963 flow [2024-06-27 23:19:05,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2963, PETRI_PLACES=441, PETRI_TRANSITIONS=322} [2024-06-27 23:19:05,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 23:19:05,712 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 322 transitions, 2963 flow [2024-06-27 23:19:05,712 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 23:19:05,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:05,713 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 23:19:05,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-27 23:19:05,713 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:19:05,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1349163488, now seen corresponding path program 29 times [2024-06-27 23:19:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151936929] [2024-06-27 23:19:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:05,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151936929] [2024-06-27 23:19:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151936929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:19:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379668327] [2024-06-27 23:19:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:08,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:19:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:19:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:19:08,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:19:08,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 322 transitions, 2963 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 23:19:08,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:08,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:19:08,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:09,251 INFO L124 PetriNetUnfolderBase]: 724/1464 cut-off events. [2024-06-27 23:19:09,252 INFO L125 PetriNetUnfolderBase]: For 483165/483165 co-relation queries the response was YES. [2024-06-27 23:19:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9894 conditions, 1464 events. 724/1464 cut-off events. For 483165/483165 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9378 event pairs, 101 based on Foata normal form. 10/1473 useless extension candidates. Maximal degree in co-relation 9695. Up to 925 conditions per place. [2024-06-27 23:19:09,271 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 122 changer transitions 6/335 dead transitions. [2024-06-27 23:19:09,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 335 transitions, 3759 flow [2024-06-27 23:19:09,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:19:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:19:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:19:09,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-27 23:19:09,273 INFO L175 Difference]: Start difference. First operand has 441 places, 322 transitions, 2963 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:19:09,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 335 transitions, 3759 flow [2024-06-27 23:19:10,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 335 transitions, 3353 flow, removed 62 selfloop flow, removed 13 redundant places. [2024-06-27 23:19:10,640 INFO L231 Difference]: Finished difference. Result has 438 places, 320 transitions, 2871 flow [2024-06-27 23:19:10,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2871, PETRI_PLACES=438, PETRI_TRANSITIONS=320} [2024-06-27 23:19:10,640 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-27 23:19:10,640 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 320 transitions, 2871 flow [2024-06-27 23:19:10,640 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 23:19:10,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:10,641 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 23:19:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-27 23:19:10,641 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:19:10,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1459092956, now seen corresponding path program 30 times [2024-06-27 23:19:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994888338] [2024-06-27 23:19:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:13,543 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 23:19:13,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994888338] [2024-06-27 23:19:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994888338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:13,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:13,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:19:13,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281573297] [2024-06-27 23:19:13,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:13,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:19:13,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:19:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:19:13,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:19:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 320 transitions, 2871 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 23:19:13,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:13,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:19:13,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:19:14,415 INFO L124 PetriNetUnfolderBase]: 709/1433 cut-off events. [2024-06-27 23:19:14,415 INFO L125 PetriNetUnfolderBase]: For 358120/358120 co-relation queries the response was YES. [2024-06-27 23:19:14,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 1433 events. 709/1433 cut-off events. For 358120/358120 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9194 event pairs, 95 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 9449. Up to 1184 conditions per place. [2024-06-27 23:19:14,434 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 59 changer transitions 0/331 dead transitions. [2024-06-27 23:19:14,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 331 transitions, 3619 flow [2024-06-27 23:19:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:19:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:19:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:19:14,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-27 23:19:14,436 INFO L175 Difference]: Start difference. First operand has 438 places, 320 transitions, 2871 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:19:14,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 331 transitions, 3619 flow [2024-06-27 23:19:15,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 331 transitions, 3313 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:19:15,963 INFO L231 Difference]: Finished difference. Result has 441 places, 321 transitions, 2761 flow [2024-06-27 23:19:15,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2761, PETRI_PLACES=441, PETRI_TRANSITIONS=321} [2024-06-27 23:19:15,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-27 23:19:15,964 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 321 transitions, 2761 flow [2024-06-27 23:19:15,964 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 23:19:15,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:19:15,964 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 23:19:15,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-27 23:19:15,964 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:19:15,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:19:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1902067654, now seen corresponding path program 31 times [2024-06-27 23:19:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:19:15,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975399238] [2024-06-27 23:19:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:19:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:19:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:19:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:19:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:19:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975399238] [2024-06-27 23:19:18,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975399238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:19:18,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:19:18,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:19:18,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945582994] [2024-06-27 23:19:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:19:18,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:19:18,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:19:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:19:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:19:19,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 23:19:19,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 321 transitions, 2761 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 23:19:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:19:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 23:19:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15